fixes #475 (#476)

Clarification of documentation

.github/pull_request_template.md

@@ -0,0 +1,3 @@
+## Checklist
+
+* [ ] I've referred to the [Guidelines for contributing](https://github.com/amiaopensource/ffmprovisr/blob/gh-pages/readme.md#guidelines-for-contributing)

code_of_conduct.md

@@ -1,50 +1,133 @@
-# Contributor Code of Conduct
+# Contributor Covenant Code of Conduct
 
-As contributors and maintainers of this project, and in the interest of
-fostering an open and welcoming community, we pledge to respect all people who
-contribute through reporting issues, posting feature requests, updating
-documentation, submitting pull requests or patches, and other activities.
+## Our Pledge
 
-We are committed to making participation in this project a harassment-free
-experience for everyone, regardless of level of experience, gender, gender
-identity and expression, sexual orientation, disability, personal appearance,
-body size, race, ethnicity, age, religion, or nationality.
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, religion, or sexual identity
+and orientation.
 
-Examples of unacceptable behavior by participants include:
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
 
-* The use of sexualized language or imagery
-* Personal attacks
-* Trolling or insulting/derogatory comments
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+* Demonstrating empathy and kindness toward other people
+* Being respectful of differing opinions, viewpoints, and experiences
+* Giving and gracefully accepting constructive feedback
+* Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+* Focusing on what is best not just for us as individuals, but for the
+  overall community
+
+Examples of unacceptable behavior include:
+
+* The use of sexualized language or imagery, and sexual attention or
+  advances of any kind
+* Trolling, insulting or derogatory comments, and personal or political attacks
 * Public or private harassment
-* Publishing other's private information, such as physical or electronic
-  addresses, without explicit permission
-* Other unethical or unprofessional conduct
+* Publishing others’ private information, such as a physical or email
+  address, without their explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
 
-Project maintainers have the right and responsibility to remove, edit, or
-reject comments, commits, code, wiki edits, issues, and other contributions
-that are not aligned to this Code of Conduct, or to ban temporarily or
-permanently any contributor for other behaviors that they deem inappropriate,
-threatening, offensive, or harmful.
+## Enforcement Responsibilities
 
-By adopting this Code of Conduct, project maintainers commit themselves to
-fairly and consistently applying these principles to every aspect of managing
-this project. Project maintainers who do not follow or enforce the Code of
-Conduct may be permanently removed from the project team.
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
 
-This Code of Conduct applies both within project spaces and in public spaces
-when an individual is representing the project or its community.
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official e-mail address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting a project maintainer. All
-complaints will be reviewed and investigated and will result in a response that
-is deemed necessary and appropriate to the circumstances. Maintainers are
-obligated to maintain confidentiality with regard to the reporter of an
-incident.
+reported to the community leaders responsible for enforcement, who are the
+ffmprovisr maintainers:
+* Ashley Blewer (ashley.blewer@gmail.com)
+* Katherine Frances Nagels (kfnagels@gmail.com)
+* Kieran O'Leary (kieran.o.leary@gmail.com)
+* Andrew Weaver (theandrewjw@gmail.com)
 
+All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series
+of actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or
+permanent ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior,  harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within
+the community.
+
+## Attribution
 
 This Code of Conduct is adapted from the [Contributor Covenant][homepage],
-version 1.4.1, available at
-[https://www.contributor-covenant.org/version/1/4/code-of-conduct.html][version]
+version 2.0, available at
+https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
 
-[homepage]: https://www.contributor-covenant.org/
-[version]: https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+Community Impact Guidelines were inspired by [Mozilla’s code of conduct
+enforcement ladder](https://github.com/mozilla/diversity).
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see the FAQ at
+https://www.contributor-covenant.org/faq. Translations are available at
+https://www.contributor-covenant.org/translations.

css/css.css

@@ -85,7 +85,7 @@ a:visited {
 }
 
 .license img {
-  max-width: 10em;
+  max-width: 6em;
   display: inline;
 }
 
@@ -105,7 +105,7 @@ h2 {
   margin: 6px 0px 12px 0px;
 }
 
-h3 {
+h3, h5 {
   font-size: 1.5em;
 }
 
@@ -113,10 +113,6 @@ h4 {
   font-size: 1.2em;
 }
 
-.intro-lead {
-  font-size: 1em;
-}
-
 code {
   padding: 2px 4px;
   color: #c7254e;

js/js.js

@@ -1,27 +1,96 @@
-$(document).ready(function() {
+function scrollTo(element, to, duration) {
+  var start = element.scrollTop,
+      change = to - start,
+      currentTime = 0,
+      increment = 20;
 
-  // open recipe window if a hash is found in URL
-  if(window.location.hash) {
-    id = window.location.hash
-    console.log(id.substring(1))
-    document.getElementById(id.substring(1)).checked = true;
-    $('html, body').animate({ scrollTop: $(id).offset().top}, 1000);
-    $(id).closest('div').find('.link').empty();
-    $(id).closest('div').find('.link').append("<small>Link to this command: <a href='https://amiaopensource.github.io/ffmprovisr/index.html"+window.location.hash+"'>https://amiaopensource.github.io/ffmprovisr/index.html"+window.location.hash+"</a></small>");
+  var animateScroll = function(){        
+    currentTime += increment;
+    var val = Math.easeInOutQuad(currentTime, start, change, duration);
+    element.scrollTop = val;
+    if(currentTime < duration) {
+        setTimeout(animateScroll, increment);
+    }
   }
+  animateScroll()
+}
 
-  // add hash URL when recipe is opened
-  $('label[class="recipe"]').on("click", function(){
-    id = $(this).attr("for");
-    window.location.hash = ('#' + id)
-    $('#' + id).closest('div').find('.link').empty();
-    $('#' + id).closest('div').find('.link').append("<small>Link to this command: <a href='https://amiaopensource.github.io/ffmprovisr/index.html"+window.location.hash+"'>https://amiaopensource.github.io/ffmprovisr/index.html"+window.location.hash+"</a></small>");
-  });
+//t = current time, b = start value, c = change in value, d = duration
+Math.easeInOutQuad = function (t, b, c, d) {
+    t /= d/2;
+    if (t < 1) return c/2*t*t + b;
+    t--;
+    return -c/2 * (t*(t-2) - 1) + b;
+}
 
-  $('#open-all').on("click", function(){
-    $('input[type=checkbox]').each(function(){
-      this.checked = !this.checked;
+function appendLink(id) {
+  const link = document.getElementById(id).nextElementSibling.querySelector('.link')
+  if (link) {
+    link.innerHTML = ("<small>Link to this command: <a href='https://amiaopensource.github.io/ffmprovisr/index.html#" + id + "'>https://amiaopensource.github.io/ffmprovisr/index.html#" + id + "</a></small>")
+  }
+}
+
+function moveToRecipe(id) {
+  document.getElementById(id).checked = true;
+  scrollTo(document.body, 0, 1000); 
+  appendLink(id)
+}
+
+// open recipe window if a hash is found in URL
+if (window.location.hash) {
+  id = window.location.hash.slice(1)
+  moveToRecipe(id)
+}
+
+// add hash URL when recipe is opened
+const recipes = document.querySelectorAll('label[class="recipe"]')
+recipes.forEach(function(item, i){
+  item.addEventListener("click", function(){
+    id = this.getAttribute("for");
+    window.location.hash = (id)
+    appendLink(id)
+  })
+})
+
+
+// open recipe when clicked
+const links = document.querySelectorAll('a')
+links.forEach(function(item, i){
+
+  item.addEventListener("click", function(){
+  intralink = this.getAttribute("href")
+  if (intralink[0] == "#") {
+    moveToRecipe(intralink.substring(1))
+  }
+})
+})
+
+
+function getCheckedBoxes(checkboxes) {
+  var checkboxesChecked = [];
+  for (var i = 0; i < checkboxes.length; i++) {
+     if (checkboxes[i].checked) {
+        checkboxesChecked.push(checkboxes[i]);
+     }
+  }
+  return checkboxesChecked.length > 0 ? checkboxesChecked : null;
+}
+
+// Collapse all recipes when button is clicked
+document.getElementById('toggle-expand-collapse-all').addEventListener("click", function(){
+  const checkboxes = document.querySelectorAll('input[type=checkbox]')
+  var checked = getCheckedBoxes(checkboxes);
+
+  if (checked) {
+    // Collapse all
+    document.querySelectorAll('input[type=checkbox]').forEach(function(item, i){
+      item.checked = false;
+      })
+  } else {
+    // Expand all
+    document.querySelectorAll('input[type=checkbox]').forEach(function(item, i){
+    item.checked = true;
     })
-  });
+  }
+})
 
-});

readme.md

@@ -2,9 +2,21 @@
 
 Repository of useful FFmpeg command lines for archivists!
 
+* [What is this?](#what-is-this)
+* [How do I see it?](#how-do-i-see-it)
+* [How do I contribute?](#how-do-i-contribute)
+  * [Guidelines for contributing](#guidelines-for-contributing)
+* [Code of conduct](#code-of-conduct)
+* [Maintainers](#maintainers)
+* [Contributors](#contributors)
+* [AVHack Team](#avhack-team)
+* [Sister projects](#sister-projects)
+* [Articles and mentions](#articles-and-mentions)
+* [License](#license)
+
 ## What is this?
 
-#### Project Objective
+### Project Objective
 
 To facilitate better understanding of FFmpeg through collaborative sharing of useful scripts and detailed flag-level description of how each script works, so archivists can copy-paste and produce their own scripts, but also understand how and why they work.
 
@@ -12,29 +24,65 @@ To facilitate better understanding of FFmpeg through collaborative sharing of us
 
 The code is found in the gh-pages branch (the default primary branch). Readme is right here. You can see the site live on [GitHub pages](http://amiaopensource.github.io/ffmprovisr).
 
-You can also install the latest [release](https://github.com/amiaopensource/ffmprovisr/releases) on your computer with the command:
+You can also install the latest [release](https://github.com/amiaopensource/ffmprovisr/releases) on your computer with the two commands:
 ```
-brew install amiaopensource/amiaos/ffmprovisr
+brew tap amiaopensource/amiaos
+brew install ffmprovisr
 ```
 and then call it locally with the command:
 ```
 ffmprovisr
 ```
-This works currently under macOS, Linux and the Linux subsystem on Windows. On classic Windows you can install the last [release](https://github.com/amiaopensource/ffmprovisr/releases) manually and the open `index.html` in a browser.
+This works currently under macOS, Linux and the Linux apps on Windows (Ubuntu and Debian tested). On classic Windows you can install the last [release](https://github.com/amiaopensource/ffmprovisr/releases) manually and the open `index.html` in a browser.
+
+### Parseable list of the commands
+
+A list of all recipes in an easily parseable [ASCII text](recipes.txt) format is provided as well. It contains for each recipe its title and command in the following format:
+
+```
+# title of recipe 1
+ffmpeg command 1
+# title of recipe 2
+ffmpeg command 2
+
+...
+
+# title of recipe n-1
+ffmpeg command n-1
+# title of recipe n
+ffmpeg command n
+```
+
+The used [one-liner](scripts/get_recipe_list) is in the `scripts` folder.
 
 ## How do I contribute?
 
 You are welcome to edit the codebase yourself, or just supply the information and ask it to be added to the site.
 
-#### Edit codebase
+### Edit codebase
 
-To contribute to this project directly (and more quickly), clone this repository and create a new branch (`git checkout -b your-branch-name`) and add or modify a new block in `index.html`. Then [submit a pull request](https://github.com/amiaopensource/ffmprovisr/pulls) and the maintainers will review and integrate your code. There is a commented-out sample block available at the bottom of `index.html` that can be as a guideline for your command.
+To contribute to this project directly (and more quickly), clone this repository and create a new branch (`git checkout -b your-branch-name`) and add or modify a new block in `index.html`. Then [submit a pull request](https://github.com/amiaopensource/ffmprovisr/pulls) and the maintainers will review and integrate your code. There is a commented-out sample block available at the bottom of `index.html` that can be a guideline for your command.
 
-#### Make a request
+#### Guidelines for contributing
+
+* Recipes should ideally do just one thing or solve one problem, to keep things as user-friendly as possible and to avoid unintended side-effects
+* Explanations and examples for recipes should be as generic as possible, to allow users to alter the command for their own use-case.
+  * This may involve the use of `VARIABLE_NAMES`
+  * Example: [Fade video and audio streams](https://amiaopensource.github.io/ffmprovisr/#fade_streams)
+* Some recipes may benefit from including a GIF that shows the output
+  * Example: [Plays a graphical output showing decibel levels of an input file](https://amiaopensource.github.io/ffmprovisr/#astats)
+* Some recipes require an explanatory section which may not fit gracefully into the recipe itself
+  * Example: [Rewrap a file](https://amiaopensource.github.io/ffmprovisr/#basic-rewrap)
+* Recipes involving `-filter_complex` can be some of the most verbose and difficult to understand, so breaking these down as much as possible into their relevant sections is ideal
+  * Example: [Generate two access MP3s from input](https://amiaopensource.github.io/ffmprovisr/#append_mp3)
+* Some recipes may refer to a specific standard or vocabulary, and it's useful to link to these so that the user can scale the recipe to their use case
+  * Example: [Generate Broadcast WAV](https://amiaopensource.github.io/ffmprovisr/#bwf)
+
+### Make a request
 
 If you are having trouble with coding it yourself or with GitHub, feel free to [submit an issue](https://github.com/amiaopensource/ffmprovisr/issues) with the kind of command you would like to see added to the site.
 
-#### General help
+### General help
 
 If you want to help but don't have a new script to add, you can help us by testing out the scripts available, by refining or clarifying the documentation, or [creating an issue](https://github.com/amiaopensource/ffmprovisr/issues) for anything that sounds confusing and requires clarification.
 
@@ -49,30 +97,38 @@ You can read our contributor code of conduct [here](https://github.com/amiaopens
 ## Contributors
 * Gathered using [octohatrack](https://github.com/LABHR/octohatrack)
 
-*Code Contributors*:
+*Code Contributors*:  
 ablwr (Ashley)  
+alavigne12 (A. Lavigne)  
+Anushka-codergirl (Anushka Raj)  
 bastibeckr (Basti Becker)  
 bturkus  
 dericed (Dave Rice)  
+digitensions (Joanna White)  
 edsu (Ed Summers)  
 jamessam (Jim Sam)  
 jfarbowitz (Jonathan Farbowitz)  
 kfrn (Katherine Frances Nagels)  
 kgrons (Kathryn Gronsbell)  
 kieranjol (Kieran O'Leary)  
-llogan (Lou)  
+llogan (Lou Logan)  
+macasaurusrex (Maura)  
+mgiraldo (Mauricio Giraldo)  
 pjotrek-b (Peter B.)  
 privatezero (Andrew Weaver)  
 retokromer (Reto Kromer)  
 rfraimow  
 
-*All Contributors*:
+All Contributors:  
 ablwr (Ashley)  
+alavigne12 (A. Lavigne)  
+Anushka-codergirl (Anushka Raj)  
 audiovisualopen  
 bastibeckr (Basti Becker)  
 brainwane (Sumana Harihareswara)  
 bturkus  
 dericed (Dave Rice)  
+digitensions (Joanna White)  
 drodz11 (Dave Rodriguez)  
 edsu (Ed Summers)  
 EG-tech (Ethan Gates)  
@@ -87,7 +143,10 @@ kellyhaydon (metacynic)
 kfrn (Katherine Frances Nagels)  
 kgrons (Kathryn Gronsbell)  
 kieranjol (Kieran O'Leary)  
-llogan (Lou)  
+llogan (Lou Logan)  
+macasaurusrex (Maura)  
+mercuryswitch  
+mgiraldo (Mauricio Giraldo)  
 mulvya  
 nkrabben (Nick Krabbenhoeft)  
 pjotrek-b (Peter B.)  
@@ -96,12 +155,13 @@ retokromer (Reto Kromer)
 rfraimow  
 richardpl (Paul B Mahol)  
 ross-spencer (Ross Spencer)  
+taschenbach (Tommy Aschenbach)  
 todrobbins (Tod Robbins)  
 
 Repo: amiaopensource/ffmprovisr  
-Code Contributors: 15  
-All Contributors: 30   
-Last updated: 2018-04-22 (4:2:2 Day)  
+GitHub Contributors: 20  
+All Contributors: 37  
+Last updated: 2019-12-11
 
 ## AVHack Team
 
@@ -112,9 +172,19 @@ Last updated: 2018-04-22 (4:2:2 Day)
 ## Sister projects
 
 [The Cable Bible](https://amiaopensource.github.io/cable-bible/): A Guide to Cables and Connectors Used for Audiovisual Tech  
+[FFCommand_Engine](https://github.com/ColorlabMD/FFCommand_Engine): a tool for easier use of FFmpeg binaries  
+[QEMU QED](https://eaasi.gitlab.io/program_docs/qemu-qed/): instructions for using QEMU (Quick EMUlator), a command line application for computer emulation and virtualization  
 [Script Ahoy](http://dd388.github.io/crals/): Community Resource for Archivists and Librarians Scripting  
 [sourcecaster](https://datapraxis.github.io/sourcecaster/): helps you use the command line to work through common challenges that come up when working with digital primary sources.
 
+## Articles and mentions
+
+* 2019-09: **Andrew Weaver & Ashley Blewer**, [Sustainability through community: ffmprovisr and the Case for Collaborative Knowledge Transfer](https://ipres2019.org/static/pdf/iPres2019_paper_97.pdf) (PDF), iPRES 2019
+  - Andrew Weaver [won](https://twitter.com/iPRES2019/status/1177136202144768000) iPres' Best First Time Contribution Award for his work on this paper :)
+* 2018-11: ffmprovisr is mentioned in [a job advert](http://web.library.emory.edu/documents/pa_staff_Audiovisual%20Conservator_Nov2018.pdf)!
+* 2017-10: **Ashley Blewer & Katherine Nagels**, [ffmprovisr gets a redesign](https://bits.ashleyblewer.com/blog/2017/10/31/ffmprovisr-redesign/)
+* 2015-11: **AMIA & DLF Hack Day 2015**, [ffmprovsr](https://wiki.curatecamp.org/index.php/Association_of_Moving_Image_Archivists_&_Digital_Library_Federation_Hack_Day_2015#ffmprovsr) - the genesis of ffmprovisr (then spelled without the 'i')
+
 ## License
 
 <a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/80x15.png"></a><br>

recipes.txt

@@ -0,0 +1,203 @@
+# Basic rewrap command
+ffmpeg -i input_file.ext -c copy -map 0 output_file.ext
+# Generate Broadcast WAV
+ffmpeg -i input_file.wav -c copy -write_bext 1 -metadata field_name='Content' output_file.wav
+# Rewrap DV video to .dv file
+ffmpeg -i input_file -f rawvideo -c:v copy output_file.dv
+# Transcode to deinterlaced Apple ProRes LT
+ffmpeg -i input_file -c:v prores -profile:v 1 -vf yadif -c:a pcm_s16le output_file.mov
+# Transcode to an H.264 access file
+ffmpeg -i input_file -c:v libx264 -pix_fmt yuv420p -c:a aac output_file
+# Transcode from DCP to an H.264 access file
+ffmpeg -i input_video_file.mxf -i input_audio_file.mxf -c:v libx264 -pix_fmt yuv420p -c:a aac output_file.mp4
+# Transcode your file with the FFV1 Version 3 Codec in a Matroska container
+ffmpeg -i input_file -map 0 -dn -c:v ffv1 -level 3 -g 1 -slicecrc 1 -slices 16 -c:a copy output_file.mkv -f framemd5 -an framemd5_output_file
+# Convert DVD to H.264
+ffmpeg -i concat:input_file_1\|input_file_2\|input_file_3 -c:v libx264 -c:a aac output_file.mp4
+# Transcode to an H.265/HEVC MP4
+ffmpeg -i input_file -c:v libx265 -pix_fmt yuv420p -c:a copy output_file
+# Transcode to H.264 using the GPU
+ffmpeg -i input_file -c:v h264_nvenc -preset llhq -rc:v vbr_hq -cq:v 19 -b:v 8000k -maxrate:v 12000k -profile:v high -c:a copy output_file
+# Transcode to H.265 using the GPU
+ffmpeg -i input_file -c:v hevc_nvenc -preset llhq -rc:v vbr_hq -cq:v 19 -b:v 5000k -maxrate:v 8000k -profile:v main10 -c:a copy output_file
+# Transcode to an Ogg Theora
+ffmpeg -i input_file -acodec libvorbis -b:v 690k output_file
+# Convert WAV to MP3
+ffmpeg -i input_file.wav -write_id3v1 1 -id3v2_version 3 -dither_method triangular -out_sample_rate 48k -qscale:a 1 output_file.mp3
+# Generate two access MP3s (with and without copyright).
+ffmpeg -i input_file -i input_file_to_append -filter_complex "[0:a:0]asplit=2[a][b];[b]afifo[bb];[1:a:0][bb]concat=n=2:v=0:a=1[concatout]" -map "[a]" -codec:a libmp3lame -dither_method triangular -qscale:a 2 output_file.mp3 -map "[concatout]" -codec:a libmp3lame -dither_method triangular -qscale:a 2 output_file_appended.mp3
+# Convert WAV to AAC/MP4
+ffmpeg -i input_file.wav -c:a aac -b:a 128k -dither_method triangular -ar 44100 output_file.mp4
+# Transform 4:3 aspect ratio into 16:9 with pillarbox
+ffmpeg -i input_file -filter:v "pad=ih*16/9:ih:(ow-iw)/2:(oh-ih)/2" -c:a copy output_file
+# Transform 16:9 aspect ratio video into 4:3 with letterbox
+ffmpeg -i input_file -filter:v "pad=iw:iw*3/4:(ow-iw)/2:(oh-ih)/2" -c:a copy output_file
+# Flip video image
+ffmpeg -i input_file -filter:v "hflip,vflip" -c:a copy output_file
+# Transform SD to HD with pillarbox
+ffmpeg -i input_file -filter:v "colormatrix=bt601:bt709, scale=1440:1080:flags=lanczos, pad=1920:1080:240:0" -c:a copy output_file
+# Change display aspect ratio without re-encoding
+ffmpeg -i input_file -c:a copy -c:v copy -aspect 4:3 output_file
+# Convert colorspace of video
+ffmpeg -i input_file -c:v libx264 -vf colormatrix=src:dst output_file
+# Modify image and sound speed
+ffmpeg -i input_file -r output_fps -filter_complex "[0:v]setpts=input_fps/output_fps*PTS[v]; [0:a]atempo=output_fps/input_fps[a]" -map "[v]" -map "[a]" output_file
+# Fade both video and audio streams
+ffmpeg -i input_file -filter:v "fade=in:st=0:d=1, fade=out:st=59:d=1" -filter:a "afade=in:st=0:d=1, afade=out:st=59:d=1" -c:v libx264 -c:a aac output_file
+# Synchronize video and audio streams
+ffmpeg -i input_file -itsoffset 0.125 -i input_file -map 1:v -map 0:a -c copy output_file
+# Clarify stream properties
+ffprobe input_file -show_streams
+# Crop video
+ffmpeg -i input_file -vf "crop=width:height" output_file
+# Change video color to black and white
+ffmpeg -i input_file -filter_complex hue=s=0 -c:a copy output_file
+# Extract audio without loss from an AV file
+ffmpeg -i input_file -c:a copy -vn output_file
+# Combine audio tracks
+ffmpeg -i input_file -filter_complex "[0:a:0][0:a:1]amerge[out]" -map 0:v -map "[out]" -c:v copy -shortest output_file
+# Inverses the audio phase of the second channel
+ffmpeg -i input_file -af pan="stereo|c0=c0|c1=-1*c1" output_file
+# Calculate Loudness Levels
+ffmpeg -i input_file -af loudnorm=print_format=json -f null -
+# RIAA Equalization
+ffmpeg -i input_file -af aemphasis=type=riaa output_file
+# Reverse CD Pre-Emphasis
+ffmpeg -i input_file -af aemphasis=type=cd output_file
+# One Pass Loudness Normalization
+ffmpeg -i input_file -af loudnorm=dual_mono=true -ar 48k output_file
+# Two Pass Loudness Normalization
+ffmpeg -i input_file -af loudnorm=dual_mono=true:measured_I=input_i:measured_TP=input_tp:measured_LRA=input_lra:measured_thresh=input_thresh:offset=target_offset:linear=true -ar 48k output_file
+# Fix A/V sync issues by resampling audio
+ffmpeg -i input_file -c:v copy -c:a pcm_s16le -af "aresample=async=1000" output_file
+# Join (concatenate) two or more files of the same type
+ffmpeg -f concat -i mylist.txt -c copy output_file
+# Join (concatenate) two or more files of different types
+ffmpeg -i input_1.avi -i input_2.mp4 -filter_complex "[0:v:0][0:a:0][1:v:0][1:a:0]concat=n=2:v=1:a=1[video_out][audio_out]" -map "[video_out]" -map "[audio_out]" output_file
+# Split one file into several smaller segments
+ffmpeg -i input_file -c copy -map 0 -f segment -segment_time 60 -reset_timestamps 1 output_file-%03d.mkv
+# Trim file
+ffmpeg -i input_file -ss 00:02:00 -to 00:55:00 -c copy -map 0 output_file
+# Create an excerpt, starting from the beginning of the file
+ffmpeg -i input_file -t 5 -c copy -map 0 output_file
+# Create a new file with the first five seconds trimmed off the original
+ffmpeg -i input_file -ss 5 -c copy -map 0 output_file
+# Create a new file with the final five seconds of the original
+ffmpeg -sseof -5 -i input_file -c copy -map 0 output_file
+# Trim silence from beginning of an audio file
+ffmpeg -i input_file -af silenceremove=start_threshold=-57dB:start_duration=1:start_periods=1  -c:a your_codec_choice -ar your_sample_rate_choice output_file
+# Trim silence from the end of an audio file
+ffmpeg -i input_file -af areverse,silenceremove=start_threshold=-57dB:start_duration=1:start_periods=1,areverse -c:a your_codec_choice -ar your_sample_rate_choice output_file
+# Upscaled, pillar-boxed HD H.264 access files from SD NTSC source
+ffmpeg -i input_file -c:v libx264 -filter:v "yadif, scale=1440:1080:flags=lanczos, pad=1920:1080:(ow-iw)/2:(oh-ih)/2, format=yuv420p" output_file
+# Deinterlace video
+ffmpeg -i input_file -c:v libx264 -vf "yadif,format=yuv420p" output_file
+# Deinterlace video fields to frames
+ffmpeg -i input_file -c:v libx264 -vf "idet,bwdif,format=yuv420p" output_file
+# Inverse telecine
+ffmpeg -i input_file -c:v libx264 -vf "fieldmatch,yadif,decimate" output_file
+# Set field order for interlaced video
+ffmpeg -i input_file -c:v video_codec -filter:v setfield=tff output_file
+# Identify interlacement patterns in a video file
+ffmpeg -i input file -filter:v idet -f null -
+# Create opaque centered text watermark
+ffmpeg -i input_file -vf drawtext="fontfile=font_path:fontsize=font_size:text=watermark_text:fontcolor=font_color:alpha=0.4:x=(w-text_w)/2:y=(h-text_h)/2" output_file
+# Overlay image watermark on video
+ffmpeg -i input_video file -i input_image_file -filter_complex overlay=main_w-overlay_w-5:5 output_file
+# Burn in timecode
+ffmpeg -i input_file -vf drawtext="fontfile=font_path:fontsize=font_size:timecode=starting_timecode:fontcolor=font_colour:box=1:boxcolor=box_colour:rate=timecode_rate:x=(w-text_w)/2:y=h/1.2" output_file
+Embed subtitles
+ffmpeg -i input_file -i subtitles_file -c copy -c:s mov_text output_file
+# Export one thumbnail per video file
+ffmpeg -i input_file -ss 00:00:20 -vframes 1 thumb.png
+# Export many thumbnails per video file
+ffmpeg -i input_file -vf fps=1/60 out%d.png
+# Create GIF from still images
+ffmpeg -f image2 -framerate 9 -pattern_type glob -i "input_image_*.jpg" -vf scale=250x250 output_file.gif
+# Create GIF from a video
+ffmpeg -ss HH:MM:SS -i input_file -filter_complex "fps=10,scale=500:-1:flags=lanczos,palettegen" -t 3 palette.png
+ffmpeg -ss HH:MM:SS -i input_file -i palette.png -filter_complex "[0:v]fps=10, scale=500:-1:flags=lanczos[v], [v][1:v]paletteuse" -t 3 -loop 6 output_file
+# Transcode an image sequence into uncompressed 10-bit video
+ffmpeg -f image2 -framerate 24 -i input_file_%06d.ext -c:v v210 output_file
+# Create video from image and audio
+ffmpeg -r 1 -loop 1 -i image_file -i audio_file -acodec copy -shortest -vf scale=1280:720 output_file
+# Audio Bitscope
+ffplay -f lavfi "amovie=input_file, asplit=2[out1][a], [a]abitscope=colors=purple|yellow[out0]"
+# Play a graphical output showing decibel levels of an input file
+ffplay -f lavfi "amovie='input.mp3', astats=metadata=1:reset=1, adrawgraph=lavfi.astats.Overall.Peak_level:max=0:min=-30.0:size=700x256:bg=Black[out]"
+# Identify pixels out of broadcast range
+ffplay -f lavfi "movie='input.mp4', signalstats=out=brng:color=cyan[out]"
+# Vectorscope from video to screen
+ffplay input_file -vf "split=2[m][v], [v]vectorscope=b=0.7:m=color3:g=green[v], [m][v]overlay=x=W-w:y=H-h"
+# Side by Side Videos/Temporal Difference Filter
+ffmpeg -i input01 -i input02 -filter_complex "[0:v:0]tblend=all_mode=difference128[a];[1:v:0]tblend=all_mode=difference128[b];[a][b]hstack[out]" -map [out] -f nut -c:v rawvideo - | ffplay -
+# Use xstack to arrange output layout of multiple video sources
+ffplay -f lavfi -i testsrc -vf "split=3[a][b][c],[a][b][c]xstack=inputs=3:layout=0_0|0_h0|0_h0+h1[out]"
+# Pull specs from video file
+ffprobe -i input_file -show_format -show_streams -show_data -print_format xml
+# Strip metadata
+ffmpeg -i input_file -map_metadata -1 -c:v copy -c:a copy output_file
+# Batch processing (Mac/Linux)
+for file in *.mxf; do ffmpeg -i "$file" -map 0 -c copy "${file%.mxf}.mov"; done
+# Check decoder errors
+ffmpeg -i input_file -f null -
+# Check FFV1 fixity
+ffmpeg -report -i input_file -f null -
+# Create MD5 checksums (video frames)
+ffmpeg -i input_file -f framemd5 -an output_file
+# Create MD5 checksums (audio samples)
+ffmpeg -i input_file -af "asetnsamples=n=48000" -f framemd5 -vn output_file
+# Create MD5 checksum(s) for A/V stream data only
+ffmpeg -i input_file -map 0:v:0 -c:v copy -f md5 output_file_1 -map 0:a:0 -c:a copy -f md5 output_file_2
+# Get checksum for video/audio stream
+ffmpeg -loglevel error -i input_file -map 0:v:0 -f hash -hash md5 -
+# Get individual checksums for all video/audio streams ("Streamhash")
+ffmpeg -i input_file -map 0 -f streamhash -hash md5 - -v quiet
+# QCTools report (with audio)
+ffprobe -f lavfi -i "movie=input_file:s=v+a[in0][in1], [in0]signalstats=stat=tout+vrep+brng, cropdetect=reset=1:round=1, idet=half_life=1, split[a][b];[a]field=top[a1];[b]field=bottom, split[b1][b2];[a1][b1]psnr[c1];[c1][b2]ssim[out0];[in1]ebur128=metadata=1, astats=metadata=1:reset=1:length=0.4[out1]" -show_frames -show_versions -of xml=x=1:q=1 -noprivate | gzip > input_file.qctools.xml.gz
+# QCTools report (no audio)
+ffprobe -f lavfi -i "movie=input_file,signalstats=stat=tout+vrep+brng, cropdetect=reset=1:round=1, idet=half_life=1, split[a][b];[a]field=top[a1];[b]field=bottom,split[b1][b2];[a1][b1]psnr[c1];[c1][b2]ssim" -show_frames -show_versions -of xml=x=1:q=1 -noprivate | gzip > input_file.qctools.xml.gz
+# Read/Extract EIA-608 Closed Captioning
+ffprobe -f lavfi -i movie=input_file,readeia608 -show_entries frame=pkt_pts_time:frame_tags=lavfi.readeia608.0.line,lavfi.readeia608.0.cc,lavfi.readeia608.1.line,lavfi.readeia608.1.cc -of csv > input_file.csv
+# Make a mandelbrot test pattern video
+ffmpeg -f lavfi -i mandelbrot=size=1280x720:rate=25 -c:v libx264 -t 10 output_file
+# Make a SMPTE bars test pattern video
+ffmpeg -f lavfi -i smptebars=size=720x576:rate=25 -c:v prores -t 10 output_file
+# Make a test pattern video
+ffmpeg -f lavfi -i testsrc=size=720x576:rate=25 -c:v v210 -t 10 output_file
+# Play HD SMPTE bars
+ffplay -f lavfi -i smptehdbars=size=1920x1080
+# Play VGA SMPTE bars
+ffplay -f lavfi -i smptebars=size=640x480
+# Generate a sine wave test audio file
+ffmpeg -f lavfi -i "sine=frequency=1000:sample_rate=48000:duration=5" -c:a pcm_s16le output_file.wav
+# SMPTE bars + Sine wave audio
+ffmpeg -f lavfi -i "smptebars=size=720x576:rate=25" -f lavfi -i "sine=frequency=1000:sample_rate=48000" -c:a pcm_s16le -t 10 -c:v ffv1 output_file
+# Make a broken file
+ffmpeg -i input_file -bsf noise=1 -c copy output_file
+# Conway's Game of Life
+ffplay -f lavfi life=s=300x200:mold=10:r=60:ratio=0.1:death_color=#C83232:life_color=#00ff00,scale=1200:800
+# Play video with OCR
+ffplay input_file -vf "ocr,drawtext=fontfile=/Library/Fonts/Andale Mono.ttf:text=%{metadata\\\:lavfi.ocr.text}:fontcolor=white"
+# Export OCR from video to screen
+ffprobe -show_entries frame_tags=lavfi.ocr.text -f lavfi -i "movie=input_file,ocr"
+# Compare Video Fingerprints
+ffmpeg -i input_one -i input_two -filter_complex signature=detectmode=full:nb_inputs=2 -f null -
+# Generate Video Fingerprint
+ffmpeg -i input -vf signature=format=xml:filename="output.xml" -an -f null -
+# Play an image sequence
+ffplay -framerate 5 input_file_%06d.ext
+# Split audio and video tracks
+ffmpeg -i input_file -map 0:v:0 video_output_file -map 0:a:0 audio_output_file
+# Merge audio and video tracks
+ffmpeg -i video_file -i audio_file -map 0:v -map 1:a -c copy output_file
+# Create ISO files for DVD access
+ffmpeg -i input_file -aspect 4:3 -target ntsc-dvd output_file.mpg
+# CSV with timecodes and YDIF
+ffprobe -f lavfi -i movie=input_file,signalstats -show_entries frame=pkt_pts_time:frame_tags=lavfi.signalstats.YDIF -of csv
+# Cover head switching noise
+ffmpeg -i input_file -filter:v drawbox=w=iw:h=7:y=ih-h:t=max output_file
+# Record and live-stream simultaneously
+ffmpeg -re -i ${INPUTFILE} -map 0 -flags +global_header -vf scale="1280:-1,format=yuv420p" -pix_fmt yuv420p -level 3.1 -vsync passthrough -crf 26 -g 50 -bufsize 3500k -maxrate 1800k -c:v libx264 -c:a aac -b:a 128000 -r:a 44100 -ac 2 -t ${STREAMDURATION} -f tee "[movflags=+faststart]${TARGETFILE}|[f=flv]${STREAMTARGET}"
+# View FFmpeg subprogram information
+ffmpeg -h type=name

scripts/ffmprovisr

@@ -4,17 +4,12 @@
 # connected to the Web, and the local version otherwise.
 
 if [[ "$(uname -s)" = "Darwin" ]] ; then
-    default_browser=$(plutil -convert json ~/Library/Preferences/com.apple.LaunchServices/com.apple.launchservices.secure.plist -r -o - | grep https -b1 | tail -n1 | cut -d'"' -f4)
     if ping -c 1 amiaopensource.github.io >/dev/null 2>&1 ; then
         ffmprovisr_path='https://amiaopensource.github.io/ffmprovisr/'
     else
         ffmprovisr_path=$(find /usr/local/Cellar/ffmprovisr -iname 'index.html' | sort -M | tail -n1)
     fi
-    if [[ -n "${default_browser}" ]] ; then
-        open -b "${default_browser}" "${ffmprovisr_path}"
-    else
-        open "${ffmprovisr_path}"
-    fi
+    open "${ffmprovisr_path}"
 elif [[ "$(uname -s)" = "Linux" ]] ; then
     if ping -c 1 amiaopensource.github.io >/dev/null 2>&1 ; then
         ffmprovisr_path='https://amiaopensource.github.io/ffmprovisr/'

scripts/get_recipe_list

@@ -0,0 +1 @@
+curl https://amiaopensource.github.io/ffmprovisr/ -s | grep -E '<h5>.*</h5>|<p><code>.*</code></p>' | sed 's/.*<code>\(.*\)<\/code>/\1/' | sed 's/.*<h5>\(.*\)<\/h5>/# \1/' | grep -v '\*\*\*' | sed -e 's/<[^>]*>//g'