[Ffmpeg-devel] H.264 decode error

[Bill May]

I'm trying to decoding some h.264 from a live encoder.  It is main
profile, level 3 (or it says so).  It does, of course, decode with
their own decoder.

The encoder does not send IDR frames, only non-IDR with I-slices.  I've
captured the stream, and extracted started at the Sequence and picture
headers.  This stream will have multiple slices per access unit.

I've uploaded the file, and the gdb session to wmay-h264 on the ftp.mplayerhq.hu.

The messages from ffplay are as follows:

[h264 @ 0x8379c6c]top block unavailable for requested intra4x4 mode -1 at 1 0
[h264 @ 0x8379c6c]error while decoding MB 1 0
[h264 @ 0x8379c6c]top block unavailable for requested intra4x4 mode -1 at 1 6
[h264 @ 0x8379c6c]error while decoding MB 1 6
[h264 @ 0x8379c6c]top block unavailable for requested intra4x4 mode -1 at 1 14
[h264 @ 0x8379c6c]error while decoding MB 1 14
[h264 @ 0x8379c6c]top block unavailable for requested intra4x4 mode -1 at 1 22
[h264 @ 0x8379c6c]error while decoding MB 1 22
[h264 @ 0x8379c6c]Unknown NAL code: 12
[h264 @ 0x8379c6c]concealing 1350 DC, 1350 AC, 1350 MV errors
[New Thread 1087486896 (LWP 14404)]
[h264 @ 0x8379c6c]top block unavailable for requested intra4x4 mode -1 at 1 0
[h264 @ 0x8379c6c]error while decoding MB 1 0
[h264 @ 0x8379c6c]top block unavailable for requested intra4x4 mode -1 at 1 6
[h264 @ 0x8379c6c]error while decoding MB 1 6
[h264 @ 0x8379c6c]top block unavailable for requested intra4x4 mode -1 at 1 14
[h264 @ 0x8379c6c]error while decoding MB 1 14
[h264 @ 0x8379c6c]top block unavailable for requested intra4x4 mode -1 at 1 22
[h264 @ 0x8379c6c]error while decoding MB 1 22
[h264 @ 0x8379c6c]Unknown NAL code: 12
[h264 @ 0x8379c6c]concealing 1350 DC, 1350 AC, 1350 MV errors
[h264 @ 0x8379c6c]error while decoding MB 5 6
ffplay_g: h264.c:6551: filter_mb: Assertion `0' failed.

Is it possible for this to be fixed ?  Or is the decoder expecting something
from the encoder that's not in the stream.

Thanks,
Bill May
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