ffmpeg defect - Unable to decode some H.264 stream after last changes

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ffmpeg defect - Unable to decode some H.264 stream after last changes

Nounou Dadoun
Hi ffmpeggers,

I have a short question - we're seeing the same behavior/error messages as https://trac.ffmpeg.org/ticket/5529 to do with errors in h264 decoding.

From our pass-through log files:
[53493][1972][Wed Aug 30 09:59:00 2017] 08-30 09:59:00 WARN : ? : (ffmpeg) [h264 @ 0000000003433560] Invalid NAL unit 1, skipping.
[53494][1972][Wed Aug 30 09:59:00 2017] 08-30 09:59:00 WARN : ? : (ffmpeg) [h264 @ 0000000003433560] no frame!
[53495][1972][Wed Aug 30 09:59:03 2017] 08-30 09:59:03 WARN : ? : (ffmpeg) [h264 @ 0000000003435BE0] Invalid NAL unit 1, skipping.
[53496][1972][Wed Aug 30 09:59:03 2017] 08-30 09:59:03 WARN : ? : (ffmpeg) [h264 @ 0000000003435BE0] no frame!

We have an encoder (camera) running 2.8.6 (i.e. before the fix) and multiple decoders (receiving stations) running 3.1.4 (i.e. after the fix for the ticket above) demonstrating (what looks like) this issue.  The question is "would this fix have affected the encoding side?"  i.e. might we address the issue by upgrading the camera side?  (Not something we do lightly because of regression testing.)

Thanks in advance for any attention/response . N


Nou Dadoun
Senior Firmware Developer, Security Specialist


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