Bigbluebutton patch for issue #2483

recordandplayback.patch

diff -urN recordandplayback-orig/edl/audio.rb recordandplayback-andrei/edl/audio.rb
--- recordandplayback-orig/edl/audio.rb	2020-09-25 19:56:21.000000000 +0300
+++ recordandplayback-andrei/edl/audio.rb	2020-12-25 00:16:29.076301902 +0200
@@ -22,9 +22,9 @@
     module Audio
       FFMPEG_AEVALSRC = "aevalsrc=s=48000:c=stereo:exprs=0|0"
       FFMPEG_AFORMAT = "aformat=sample_fmts=s16:sample_rates=48000:channel_layouts=stereo"
-      FFMPEG_WF_CODEC = 'flac'
-      FFMPEG_WF_ARGS = ['-c:a', FFMPEG_WF_CODEC, '-f', 'flac']
-      WF_EXT = 'flac'
+      FFMPEG_WF_CODEC = 'libvorbis'
+      FFMPEG_WF_ARGS = ['-c:a', FFMPEG_WF_CODEC, '-q:a', '2', '-f', 'ogg']
+      WF_EXT = 'ogg'
 
       def self.dump(edl)
         BigBlueButton.logger.debug "EDL Dump:"
diff -urN recordandplayback-orig/edl/video.rb recordandplayback-andrei/edl/video.rb
--- recordandplayback-orig/edl/video.rb	2020-09-25 19:56:21.000000000 +0300
+++ recordandplayback-andrei/edl/video.rb	2020-12-29 00:32:49.044991167 +0200
@@ -23,10 +23,10 @@
 module BigBlueButton
   module EDL
     module Video
-      FFMPEG_WF_CODEC = 'mpeg2video'
+      FFMPEG_WF_CODEC = 'libx264'
       FFMPEG_WF_FRAMERATE = 24
-      FFMPEG_WF_ARGS = ['-an', '-codec', FFMPEG_WF_CODEC.to_s, '-q:v', '2', '-g', (FFMPEG_WF_FRAMERATE * 10).to_s, '-pix_fmt', 'yuv420p', '-r', FFMPEG_WF_FRAMERATE.to_s, '-f', 'mpegts']
-      WF_EXT = 'ts'
+      FFMPEG_WF_ARGS = ['-an', '-codec', FFMPEG_WF_CODEC.to_s, '-preset', 'superfast', '-movflags', 'frag_keyframe', '-crf', '28', '-g', (FFMPEG_WF_FRAMERATE * 10).to_s, '-pix_fmt', 'yuv420p', '-r', FFMPEG_WF_FRAMERATE.to_s, '-f', 'h264']
+      WF_EXT = 'mp4'
 
       def self.dump(edl)
         BigBlueButton.logger.debug "EDL Dump:"
diff -urN recordandplayback-orig/generators/audio_processor.rb recordandplayback-andrei/generators/audio_processor.rb
--- recordandplayback-orig/generators/audio_processor.rb	2020-09-25 19:56:21.000000000 +0300
+++ recordandplayback-andrei/generators/audio_processor.rb	2020-12-25 00:16:06.108558288 +0200
@@ -60,13 +60,13 @@
 
       ogg_format = {
         :extension => 'ogg',
-        :parameters => [ [ '-c:a', 'libvorbis', '-q:a', '2', '-f', 'ogg' ] ]
+        :parameters => [ [ '-c:a', 'copy', '-f', 'ogg' ] ]
       }
       BigBlueButton::EDL.encode(@audio_file, nil, ogg_format, file_basename)
 
       webm_format = {
         :extension => 'webm',
-        :parameters => [ [ '-c:a', 'libvorbis', '-q:a', '2', '-f', 'webm' ] ],
+        :parameters => [ [ '-c:a', 'copy', '-f', 'webm' ] ],
         :postprocess => [ [ 'mkclean', '--quiet', ':input', ':output' ] ]
       }
       BigBlueButton::EDL.encode(@audio_file, nil, webm_format, file_basename)
diff -urN recordandplayback-orig/generators/video.rb recordandplayback-andrei/generators/video.rb
--- recordandplayback-orig/generators/video.rb	2020-12-22 00:30:44.847685272 +0200
+++ recordandplayback-andrei/generators/video.rb	2020-12-29 01:47:08.550982370 +0200
@@ -55,8 +55,8 @@
           # These settings are appropriate for 640x480 medium quality, and should be tweaked for other resolutions
           # See https://developers.google.com/media/vp9/settings/vod/
           # Increase -threads to max of 4 or increase -speed to max of 4 to speed up processing
-          %w[-c:v libvpx-vp9 -b:v 750K -minrate 375K -maxrate 1088K -crf 33 -quality good -speed 1 -g 240 -tile-columns 1 -threads 2
-             -c:a libopus -b:a 48K
+          %w[-c:v libvpx-vp9 -crf 28 -deadline realtime -cpu-used 8 -g 240 -tile-columns 1 -threads 2
+             -c:a copy
              -f webm]
           # Google recommends doing a 2-pass encode for better quality, but it's a lot slower. If you want to do this,
           # comment the lines above, and uncomment the lines below.
@@ -76,7 +76,7 @@
           # Increase -threads (or remove it, to use all cpu cores) to speed up processing
           # You can also change the preset: try 'fast' or 'faster'
           # To change quality, adjust the -crf value. Lower numbers are higher quality.
-          %w[-c:v libx264 -crf 23 -threads 2 -preset medium -g 240
+          %w[-c:v copy
              -c:a aac -b:a 64K
              -f mp4 -movflags faststart]
         ],
@@ -121,8 +121,8 @@
           # These settings are appropriate for 1280x720 medium quality, and should be tweaked for other resolutions
           # See https://developers.google.com/media/vp9/settings/vod/
           # Increase -threads to max of 8 or increase -speed to max of 4 to speed up processing
-          %w[-c:v libvpx-vp9 -b:v 1024K -minrate 512K -maxrate 1485K -crf 32 -quality good -speed 2 -g 240 -tile-columns 2 -threads 2
-             -c:a libopus -b:a 48K
+          %w[-c:v libvpx-vp9 -crf 28 -deadline realtime -cpu-used 8 -g 240 -tile-columns 2 -threads 2
+             -c:a copy
              -f webm]
           # Google recommends doing a 2-pass encode for better quality, but it's a lot slower. If you want to do this,
           # comment the lines above, and uncomment the lines below.
@@ -142,7 +142,7 @@
           # Increase -threads (or remove it, to use all cpu cores) to speed up processing
           # You can also change the preset: try 'fast' or 'faster'
           # To change quality, adjust the -crf value. Lower numbers are higher quality.
-          %w[-c:v libx264 -crf 23 -threads 2 -preset medium -g 240
+          %w[-c:v copy
              -c:a aac -b:a 64K
              -f mp4 -movflags faststart]
         ],