Merge pull request #464 from amiaopensource/nostdin

add -nostdin note

index.html

@@ -108,6 +108,18 @@
     <div class="well">
 
     <h2 id="concepts">Learn about more advanced FFmpeg concepts</h2>
+    <!-- Loop usage explanation -->
+    <label class="recipe" for="batch-loop">Batch and Loop script usage</label>
+    <input type="checkbox" id="batch-loop">
+    <div class="hiding">
+      <h5>Batch and Loop script usage</h5>
+      <p><code>ffmpeg -nostdin -i <em>input_file</em> ...</code></p>
+      <p>One of the frequent uses of FFmpeg is to run batch commands within loops to, for example, generate access files for an entire collection at once.</p>
+      <p>When running an FFmpeg command within a loop it is often necessary to use the <code>-nostdin</code> flag prior to the input in order to ensure successful execution of the commands. This is needed to override FFmpeg's default behavior of enabling interaction on standard input which can result in errors as loop inputs are fed to the ongoing command.</p>
+      <p class="link"></p>
+    </div>
+    <!-- End loop usage explanation -->
+
     <!-- Codec Defaults explanation -->
     <label class="recipe" for="codec-defaults">Codec defaults</label>
     <input type="checkbox" id="codec-defaults">
@@ -1092,16 +1104,18 @@
     <div class="hiding">
       <h5>Join files together</h5>
       <p><code>ffmpeg -f concat -i mylist.txt -c copy <em>output_file</em></code></p>
-      <p>This command takes two or more files of the same file type and joins them together to make a single file. All that the program needs is a text file with a list specifying the files that should be joined. However, it only works properly if the files to be combined have the exact same codec and technical specifications. Be careful, FFmpeg may appear to have successfully joined two video files with different codecs, but may only bring over the audio from the second file or have other weird behaviors. Don’t use this command for joining files with different codecs and technical specs and always preview your resulting video file!</p>
+      <p>This command takes two or more files of the same file type and joins them together to make a single file. All that the program needs is a text file with a list specifying the files that should be joined. If possible, run the command from the same directory where the files and the text file reside. Otherwise you'll have to use <code>-safe 0</code>, see below for more information. However, it only works properly if the files to be combined have the exact same codec and technical specifications. Be careful, FFmpeg may appear to have successfully joined two video files with different codecs, but may only bring over the audio from the second file or have other weird behaviors. Don’t use this command for joining files with different codecs and technical specs and always preview your resulting video file!</p>
       <dl>
         <dt>ffmpeg</dt><dd>starts the command</dd>
         <dt>-f concat</dt><dd>forces ffmpeg to concatenate the files and to keep the same file format</dd>
         <dt>-i <em>mylist.txt</em></dt><dd>path, name and extension of the input file. Per the <a href="https://ffmpeg.org/ffmpeg-formats.html#Options" target="_blank">FFmpeg documentation</a>, it is preferable to specify relative rather than absolute file paths, as allowing absolute file paths may pose a security risk.<br>
-        This text file contains the list of files to be concatenated and should be formatted as follows:
-        <pre>file '<em>./first_file.ext</em>'
-  file '<em>./second_file.ext</em>'
+        This text file contains the list of files (without their absolute path) to be concatenated and should be formatted as follows:
+<pre>
+  file '<em>first_file.ext</em>'
+  file '<em>second_file.ext</em>'
   . . .
-  file '<em>./last_file.ext</em>'</pre>
+  file '<em>last_file.ext</em>'
+</pre>
   In the above, <strong>file</strong> is simply the word "file". Straight apostrophes ('like this') rather than curved quotation marks (‘like this’) must be used to enclose the file paths.<br>
   <strong>Note:</strong> If specifying absolute file paths in the .txt file, add <code>-safe 0</code> before the input file.<br>
   e.g.: <code>ffmpeg -f concat -safe 0 -i mylist.txt -c copy <em>output_file</em></code></dd>

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/'