update pbs tech specs link (#444)

delete a space before `</h5>`

index.html

@@ -628,10 +628,10 @@
         <dt>-c:a copy</dt><dd>re-encodes using the same audio codec<br>
         For silent videos you can replace <code>-c:a copy</code> with <code>-an</code>.</dd>
         <dt><em>output_file</em></dt><dd>path, name and extension of the output file</dd>
-        <p>If your source is interlaced, you will want to deinterlace prior to scaling. In that case, your command would look like this:</p>
-        <p><code>ffmpeg -i <em>input_file</em> -c:v libx264 -filter:v "yadif, colormatrix=bt601:bt709, scale=1440:1080:flags=lanczos, pad=1920:1080:240:0" -c:a copy <em>output_file</em></code></p>
-        <p>See the <a href="#ntsc_to_h264">Interlaced NTSC to MP4 recipe</a> for a fuller explanation of the deinterlacing step.</p>
       </dl>
+      <p>If your source is interlaced, you will want to deinterlace prior to scaling. In that case, your command would look like this:</p>
+      <p><code>ffmpeg -i <em>input_file</em> -c:v libx264 -filter:v "yadif, colormatrix=bt601:bt709, scale=1440:1080:flags=lanczos, pad=1920:1080:240:0" -c:a copy <em>output_file</em></code></p>
+      <p>See the <a href="#ntsc_to_h264">Interlaced NTSC to MP4 recipe</a> for a fuller explanation of the deinterlacing step.</p>
       <p class="link"></p>
     </div>
     <!-- ends SD to HD -->
@@ -940,7 +940,7 @@
       <p><code>ffmpeg -i <em>input_file</em> -af loudnorm=print_format=json -f null -</code></p>
       <p>This filter calculates and outputs loudness information in json about an input file (labeled input) as well as what the levels would be if loudnorm were applied in its one pass mode (labeled output). The values generated can be used as inputs for a 'second pass' of the loudnorm filter allowing more accurate loudness normalization than if it is used in a single pass.</p>
       <p>These instructions use the loudnorm defaults, which align well with PBS recommendations for target loudness. More information can be found at the <a href="https://ffmpeg.org/ffmpeg-filters.html#loudnorm" target="_blank">loudnorm documentation</a>.</p>
-      <p>Information about PBS loudness standards can be found in the <a href="https://www-tc.pbs.org/capt/Producing/TOS-2012-Pt2-Distribution.pdf" target="_blank">PBS Technical Operating Specifications</a> document. Information about EBU loudness standards can be found in the <a href="https://tech.ebu.ch/docs/r/r128-2014.pdf" target="_blank">EBU R 128</a> recommendation document.</p>
+      <p>Information about PBS loudness standards can be found in the <a href="http://bento.cdn.pbs.org/hostedbento-prod/filer_public/PBS_About/Producing/Red%20Book/TOS%20Pt%201%20Submission%202016.pdf" target="_blank">PBS Technical Operating Specifications</a> document. Information about EBU loudness standards can be found in the <a href="https://tech.ebu.ch/docs/r/r128-2014.pdf" target="_blank">EBU R 128</a> recommendation document.</p>
       <dl>
         <dt>ffmpeg</dt><dd>starts the command</dd>
         <dt><em>input_file</em></dt><dd>path, name and extension of the input file</dd>
@@ -1506,7 +1506,7 @@
     <label class="recipe" for="embed_subtitles">Embed subtitles</label>
     <input type="checkbox" id="embed_subtitles">
     <div class="hiding">
-      <h5>Embed a subtitle file into a movie file </h5>
+      <h5>Embed a subtitle file into a movie file</h5>
       <p><code>ffmpeg -i <em>input_file</em> -i <em>subtitles_file</em> -c copy -c:s mov_text <em>output_file</em></code></p>
       <dl>
         <dt>ffmpeg</dt><dd>starts the command</dd>

recipes.txt

@@ -108,7 +108,7 @@ ffmpeg -i input_file -ss 00:00:20 -vframes 1 thumb.png
 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
+# 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
@@ -161,7 +161,7 @@ ffmpeg -f lavfi -i smptebars=size=720x576:rate=25 -c:v prores -t 10 output_file
 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
+# 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
@@ -181,7 +181,7 @@ ffmpeg -i input_one -i input_two -filter_complex signature=detectmode=full:nb_in
 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
+# 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
@@ -195,22 +195,3 @@ ffmpeg -i input_file -filter:v drawbox=w=iw:h=7:y=ih-h:t=max output_file
 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
-# Rip a CD with CD Paranoia
-cdparanoia -L -B -O [Drive Offset] [Starting Track Number]-[Ending Track Number] output_file.wav
-# Rip a CD with Cdda2wav
-cdda2wav -L0 -t all -cuefile -paranoia paraopts=retries=200,readahead=600,minoverlap=sectors-per-request-1 -verbose-level all output.wav
-# Compare two images
-compare -metric ae image1.ext image2.ext null:
-# Create thumbnails of images
-mogrify -resize 80x80 -format jpg -quality 75 -path thumbs *.jpg
-# Creates grid of images from text file
-montage @list.txt -tile 6x12 -geometry +0+0 output_grid.jpg
-# Get file signature data
-convert -verbose input_file.ext | grep -i signature
-# Removes exif metadata
-mogrify -path ./stripped/ -strip *.jpg
-# Resizes image to specific pixel width
-convert input_file.ext -resize 750 output_file.ext
-# Transcoding to/from FLAC
-flac --best --keep-foreign-metadata --preserve-modtime --verify input.wav
-flac --decode --keep-foreign-metadata --preserve-modtime --verify input.flac