sh scripts using FFMPEG to convert videos for my LG Tv, WebOS media player, and documentation for my forgetfulness
- Needs ffmpeg installed and accessable from the terminal
- Check if it's installed by calling
ffmpeg -h - Needs to be added to the path properly
- Check if it's installed by calling
This reddit thread had a user complaining about their TV not playing the audio for an mkv and a number of recommendations in it about the compatibility of certain types of audio codecs that were not supported by the tv
your files use Vorbis audio, which i doubt many devices can read. it probably has nothing to do with having dual tracks.
what you probably want to do is convert it to aac audio.
Working backwards from that I searched around to find how to convert the audio using what I had seen as playable video based on the description in the thread also
Additionally LGTV has the following guide for WebOS TV developers
https://webostv.developer.lge.com/develop/specifications/video-audio-35
| Container | Video codecs | Audio codecs |
|---|---|---|
| mp3, mp4, move | H.264/AVC, MPEG-4, HEVC | Dolby Digital, Dolby Digital Plus, AAC, MPEG-1 Layer III (MP3) |
| mkv | MPEG-2, MPEG-4, H.264/AVC, VP8, VP9, HEVC | Dolby Digital, Dolby Digital Plus, AAC, PCM, DTS, MPEG-1 Layer I, II, MPEG-1 Layer III (MP3) |
Included this command from the top comment
ffmpeg -i input.avi -c:v libx264 -preset slow -crf 20 -c:a aac -b:a 160k -vf format=yuv420p -movflags +faststart output.mp4
and this breakdown of usage:
input.avi is the input file.
-c:v libx264 selects the video encoder libx264, which is a H.264 encoder.
-preset slow selects the slow x264 encoding preset. Default preset is medium. Use the slowest preset that you have patience for.
-crf 20 selects a CRF value of 20 which will result in a high quality output. Default value is 23. A lower value is a higher quality. Use the highest value that gives an acceptable quality.
-c:a aac selects the audio encoder aac, which is the built-in FFmpeg AAC encoder.
-b:a 160k encodes the audio with a bitrate of 160k.
-vf format=yuv420p chooses YUV 4:2:0 chroma-subsampling which is recommended for H.264 compatibility.
-movflags +faststart is an option for MP4 output that move some data to the beginning of the file after encoding is finished. This allows the video to begin playing faster if it is watched via progressive download playback.
output.mp4 is the output file.
also the links to the two codecs: