[FFmpeg-user] When downloading HLS video with FFMPEG it does not download the audio

[Micael Silva]

Seems that there are some issues with encoding of the file that prevents
FFMPEG to correctly detect the audio format at the standard probe size.
Increasing the probe size seems to do the trick:

ffmpeg.exe -analyzeduration 5G -i
https://teste-etv.espiritismo.tv/437602-1080p.m3u8

Try to reduce keyframe distance to 8 or 5 seconds instead of the actual 12
seconds to increase compatibility and better performance for the playback.

On Tue, Aug 3, 2021 at 1:01 PM Thiago Franklin <
thiago.franklin at portalser.org> wrote:

> can anybody help me? I've already turned the internet upside down and I
> can't find a solution. This problem only happens in some videos and others
> work normally.
>
> Em seg., 2 de ago. de 2021 23:03, Thiago Franklin <
> thiago.franklin at portalser.org> escreveu:
>
> > I have a problem, when I try to download an HLS video with FFMPEG, it
> > downloads the video track, but it doesn't find the AUDIO. When running
> the
> > HLS .m3u8 file in a player, it plays normally, audio and video, but when
> > trying to download, it shows an error message saying that the audio
> cannot
> > be found.
> >
> > https://teste-etv.espiritismo.tv/437602.m3u8
> >
> > *I'm running the following command:*
> >
> > ffmpeg.exe -i "https://teste-etv.espiritismo.tv/437602.m3u8" -codec:a
> > libmp3lame -b:a 96k teste-hls.mp3
> >
> > *OR*
> >
> > ffmpeg -i "https://appsetv.b-cdn.net/hls/437602/437602.m3u8" c copy
> -absf
> > aac_adtstoasc teste-hls.mp3
> >
> > *Displays the following error when trying to download the audio:*
> >
> > [hls @ 0000021b5d9ad940] Skip ('#EXT-X-VERSION:3')
> > [hls @ 0000021b5d9ad940] Skip ('#EXT-X-INDEPENDENT-SEGMENTS')
> > [hls @ 0000021b5d9ad940] Opening '
> https://appsetv.b-cdn.net/hls/437602/437602-1080p.m3u8' for reading
> > [hls @ 0000021b5d9ad940] Skip ('#EXT-X-VERSION:3')
> > [https @ 0000021b5e10ee00] Opening '
> https://appsetv.b-cdn.net/hls/437602/437602-720p.m3u8' for reading
> > [hls @ 0000021b5d9ad940] Skip ('#EXT-X-VERSION:3')
> > [https @ 0000021b5e10ee00] Opening '
> https://appsetv.b-cdn.net/hls/437602/437602-540p.m3u8' for reading
> > [hls @ 0000021b5d9ad940] Skip ('#EXT-X-VERSION:3')
> > [https @ 0000021b5e10ee00] Opening '
> https://appsetv.b-cdn.net/hls/437602/437602-360p.m3u8' for reading
> > [hls @ 0000021b5d9ad940] Skip ('#EXT-X-VERSION:3')
> > [hls @ 0000021b5d9ad940] Opening '
> https://appsetv.b-cdn.net/hls/437602/437602-1080p_00001.ts' for reading
> > [hls @ 0000021b5d9ad940] Opening '
> https://appsetv.b-cdn.net/hls/437602/437602-1080p_00002.ts' for reading
> > [hls @ 0000021b5d9ad940] Opening '
> https://appsetv.b-cdn.net/hls/437602/437602-720p_00001.ts' for reading
> > [hls @ 0000021b5d9ad940] Opening '
> https://appsetv.b-cdn.net/hls/437602/437602-720p_00002.ts' for reading
> > [hls @ 0000021b5d9ad940] Opening '
> https://appsetv.b-cdn.net/hls/437602/437602-540p_00001.ts' for reading
> > [hls @ 0000021b5d9ad940] Opening '
> https://appsetv.b-cdn.net/hls/437602/437602-540p_00002.ts' for reading
> > [hls @ 0000021b5d9ad940] Opening '
> https://appsetv.b-cdn.net/hls/437602/437602-360p_00001.ts' for reading
> > [hls @ 0000021b5d9ad940] Opening '
> https://appsetv.b-cdn.net/hls/437602/437602-360p_00002.ts' for reading
> > [hls @ 0000021b5d9ad940] Could not find codec parameters for stream 1
> (Audio: aac ([15][0][0][0] / 0x000F), 0 channels, fltp): unspecified sample
> rate
> > Consider increasing the value for the 'analyzeduration' and 'probesize'
> options
> > [hls @ 0000021b5d9ad940] Could not find codec parameters for stream 3
> (Audio: aac ([15][0][0][0] / 0x000F), 0 channels, fltp): unspecified sample
> rate
> > Consider increasing the value for the 'analyzeduration' and 'probesize'
> options
> > [hls @ 0000021b5d9ad940] Could not find codec parameters for stream 5
> (Audio: aac ([15][0][0][0] / 0x000F), 0 channels, fltp): unspecified sample
> rate
> > Consider increasing the value for the 'analyzeduration' and 'probesize'
> options
> > [hls @ 0000021b5d9ad940] Could not find codec parameters for stream 7
> (Audio: aac ([15][0][0][0] / 0x000F), 0 channels, fltp): unspecified sample
> rate
> > Consider increasing the value for the 'analyzeduration' and 'probesize'
> options
> > Input #0, hls, from 'https://appsetv.b-cdn.net/hls/437602/437602.m3u8':
> >   Duration: 00:01:41.00, start: 2.083333, bitrate: 0 kb/s
> >   Program 0
> >     Metadata:
> >       variant_bitrate : 2509173
> >     Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p,
> 1920x1080 [SAR 1:1 DAR 16:9], 24 fps, 24 tbr, 90k tbn, 48 tbc
> >     Metadata:
> >       variant_bitrate : 2509173
> >     Stream #0:1: Audio: aac ([15][0][0][0] / 0x000F), 0 channels, fltp
> >     Metadata:
> >       variant_bitrate : 2509173
> >   Program 1
> >     Metadata:
> >       variant_bitrate : 1205957
> >     Stream #0:2: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p,
> 1280x720 [SAR 1:1 DAR 16:9], 24 fps, 24 tbr, 90k tbn, 48 tbc
> >     Metadata:
> >       variant_bitrate : 1205957
> >     Stream #0:3: Audio: aac ([15][0][0][0] / 0x000F), 0 channels, fltp
> >     Metadata:
> >       variant_bitrate : 1205957
> >   Program 2
> >     Metadata:
> >       variant_bitrate : 1165600
> >     Stream #0:4: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p,
> 960x540 [SAR 1:1 DAR 16:9], 24 fps, 24 tbr, 90k tbn, 48 tbc
> >     Metadata:
> >       variant_bitrate : 1165600
> >     Stream #0:5: Audio: aac ([15][0][0][0] / 0x000F), 0 channels, fltp
> >     Metadata:
> >       variant_bitrate : 1165600
> >   Program 3
> >     Metadata:
> >       variant_bitrate : 656245
> >     Stream #0:6: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p,
> 640x360 [SAR 1:1 DAR 16:9], 24 fps, 24 tbr, 90k tbn, 48 tbc
> >     Metadata:
> >       variant_bitrate : 656245
> >     Stream #0:7: Audio: aac ([15][0][0][0] / 0x000F), 0 channels, fltp
> >     Metadata:
> >       variant_bitrate : 656245
> > Output #0, mp3, to 'teste-hls.mp3':
> > Output file #0 does not contain any stream
> >
> >
> >
> >
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