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Downloading with Adobe HDS (F4M) produces slightly corrupted files #2752

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Cigaes opened this issue Apr 16, 2014 · 1 comment
Open

Downloading with Adobe HDS (F4M) produces slightly corrupted files #2752

Cigaes opened this issue Apr 16, 2014 · 1 comment
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@Cigaes
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@Cigaes Cigaes commented Apr 16, 2014

With a video downloaded like this (using Git head):

python -m youtube_dl http://www.canalplus.fr/c-humour/pid1784-c-les-guignols.html

Decoding the video with ffmpeg gives a lot of errors:

ffmpeg -i Les\ Guignols\ de\ l\'Info\ du\ 15_04_14\ -\ Chirac\ sur\ Copé-1054753.flv -f null -
Press [q] to stop, [?] for help
[h264 @ 0x1322700] AVC: nal size 233308470:00:06.36 bitrate=N/A    
[h264 @ 0x1322700] missing picture in access unit with size 59
[h264 @ 0x1322700] AVC: nal size 233308470:00:12.74 bitrate=N/A    
[h264 @ 0x1322700] missing picture in access unit with size 59
[h264 @ 0x1322700] AVC: nal size 23330847
[h264 @ 0x1322700] missing picture in access unit with size 59
[h264 @ 0x1322700] AVC: nal size 233308470:00:19.66 bitrate=N/A    
[h264 @ 0x1322700] missing picture in access unit with size 59

The same file downloaded using AdobeHDS.php from https://github.com/K-S-V/Scripts finishes without error:

Press [q] to stop, [?] for help
frame=11874 fps=353 q=0.0 Lsize=N/A time=00:07:55.00 bitrate=N/A    
video:1113kB audio:81824kB subtitle:0 global headers:0kB muxing overhead -100.000026%

Based on the number of occurrences, it looks like errors occur at each stitch between fragments.

The issue seems not to cause any visible difference on the decoded video, so this is a very minor problem.

@jaimeMF jaimeMF self-assigned this Apr 16, 2014
@youribonnaffe
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@youribonnaffe youribonnaffe commented Apr 24, 2014

I noticed the same issue and video playback fails on my TV (using Neuf Evolution box).

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