Not playing when using the vp9 codec in HLS

[sgbai78]

When vp9 is used for video_codecs, an error occurs in the final webm file and it does not play.

The pipeline file I used is below.

streaming_mode: vod

resolutions:
- 4k
- 1080p
- 720p
- 432p
- 360p

channel_layouts:
- stereo
- surround

audio_codecs:
- aac
- opus
video_codecs:
- vp9

manifest_format:
# - dash
- hls

segment_size: 4

When I checked the intermediate file created by ffmpeg using ffprobe, I could see that vp9 was normally applied.

This is the ffprobe result of the file generated by ffmpeg.

ffprobe version N-110653-g01d9a84ef5 Copyright (c) 2007-2023 the FFmpeg developers
built with gcc 11 (Ubuntu 11.3.0-1ubuntu1~22.04)
configuration: --prefix=/usr/local --enable-static --enable-nonfree --enable-gpl --enable-version3 --enable-runtime-cpudetect --enable-libaom --enable-libfreetype --enable-libfontconfig --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libtheora --enable-libvpx --enable-libwebp --enable-opencl --enable-opengl --cpu=native --enable-nvenc --enable-vaapi --enable-ladspa --enable-libass --enable-libsmbclient --enable-libsoxr --enable-libssh --enable-libxvid --enable-libx264 --enable-libx265 --enable-openal --enable-openssl --enable-cuda --enable-omx
libavutil 58. 7.100 / 58. 7.100
libavcodec 60. 14.100 / 60. 14.100
libavformat 60. 5.100 / 60. 5.100
libavdevice 60. 2.100 / 60. 2.100
libavfilter 9. 8.100 / 9. 8.100
libswscale 7. 2.100 / 7. 2.100
libswresample 4. 11.100 / 4. 11.100
libpostproc 57. 2.100 / 57. 2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'de44b35e-bce8-4891-9601-879dbb017441':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso6iso2mp41
encoder : Lavf60.5.100
Duration: 00:01:09.32, start: 0.000000, bitrate: 976 kb/s
Stream #0:00x1: Video: vp9 (Profile 0) (vp09 / 0x39307076), yuv420p(tv, progressive), 1280x720, 975 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 12800 tbn (default)
Metadata:
handler_name : VideoHandler
vendor_id : [0][0][0][0]
encoder : Lavc60.14.100 libvpx-vp9

When checking the files created in the final directory through ffprobe, the following error occurs.

ffprobe version N-110653-g01d9a84ef5 Copyright (c) 2007-2023 the FFmpeg developers
built with gcc 11 (Ubuntu 11.3.0-1ubuntu1~22.04)
configuration: --prefix=/usr/local --enable-static --enable-nonfree --enable-gpl --enable-version3 --enable-runtime-cpudetect --enable-libaom --enable-libfreetype --enable-libfontconfig --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libtheora --enable-libvpx --enable-libwebp --enable-opencl --enable-opengl --cpu=native --enable-nvenc --enable-vaapi --enable-ladspa --enable-libass --enable-libsmbclient --enable-libsoxr --enable-libssh --enable-libxvid --enable-libx264 --enable-libx265 --enable-openal --enable-openssl --enable-cuda --enable-omx
libavutil 58. 7.100 / 58. 7.100
libavcodec 60. 14.100 / 60. 14.100
libavformat 60. 5.100 / 60. 5.100
libavdevice 60. 2.100 / 60. 2.100
libavfilter 9. 8.100 / 9. 8.100
libswscale 7. 2.100 / 7. 2.100
libswresample 4. 11.100 / 4. 11.100
libpostproc 57. 2.100 / 57. 2.100
[matroska,webm @ 0x561f8654cf00] Format matroska,webm detected only with low score of 1, misdetection possible!
[matroska,webm @ 0x561f8654cf00] EBML header parsing failed
video_720p_3.4M_vp9_11.webm: Invalid data found when processing input

[joeyparrish]

I've seen something similar before. You might need to update libvpx or use our statically-built official binaries.