Video freezing with no obvious issues in logs

Graham Leggett minfrin at sharp.fm
Wed Nov 16 22:51:45 UTC 2016


On 17 Nov 2016, at 12:11 AM, Blake Chambers <blake.chambers at vecna.com> wrote:
> 0:00:55.297977295 15523 0x4cbcc0 DEBUG GST_CAPS gstpad.c 2644 gst_pad_has_current_caps <parser_h264parse_3:src> check current pad caps video/x-h264, stream-format=(string)byte-stream, alignment=(string)au, level=(string)3.1, profile=(string)constrained-baseline, width=(int)640, height=(int)480, framerate=(fraction)0/1, parsed=(boolean)true
> 0:00:55.298390626 15523 0x4cbcc0 LOG videodecoder gstvideodecoder.c 2498 gst_video_decoder_chain <decoder_omxh264dec_4> chain PTS 0:00:54.738874800, DTS 0:00:54.785062370 duration 99:99:99.999999999 size 7129
This duration looks odd. In my streams I have a duration of approximately 40ms (1/25). I see you also don’t yet have a framerate, I’m not sure if that’s significant.
> If you look at 0:00:55.353060192, there is an ERROR in the omxvideodec "No corresponding frame found".  This error happens several times around the freezing issue, then it stops appearing and the video remains frozen.
> 
I have seen a number of “No corresponding frame found” appear in my streams, they seem to show up throughout the stream in my case, but I suspect this is because the glitches are occurring quite often, they’re not always fatal.
> Unfortunately I'm not seeing the "no valid PTS" from videodecoder.
> 
> I was wondering, could I could get the TS file you mentioned and any other test files you've been using from you?  I'd like to try and reproduce you issue on my machine.
> 
The file that’s causing me all the trouble is this one:

http://www.sharp.fm/glitch1.ts

It fails at around the 1:35-1:38 mark, it fails at a different place on each attempt to decode, but it does always fail.

Regards,
Graham
—

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