尝试使用ffplay播放h264流时出错

Question

I have a file that contain part of raw h264 stream and I want to play it in Android app..

First I tried to play it on the computer... So I tried to use ffplay for this.. I used this command:
ffplay.exe stream.out
Then its opened a window and start to play it, but all i saw is a lot of green on the screen...

The output had a lot of red lines of errors:

[h264 @ 00000000031238c0] Reducing left cropping to 0 chroma samples to preserve alignment.
[h264 @ 00000000031238c0] illegal aspect ratio
[h264 @ 0000000003110ec0] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, h264, from 'out4':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: h264 (High), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 1200k tbn, 59.94 tbc
[h264 @ 0000000005791960] error while decoding MB 50 37, bytestream -11
[h264 @ 0000000005791960] top block unavailable for requested intra4x4 mode -1 at 4 42
[h264 @ 0000000005791960] error while decoding MB 4 42, bytestream 4057
[h264 @ 0000000005791960] concealing 3519 DC, 3519 AC, 3519 MV errors in P frame
[h264 @ 0000000005782840] error while decoding MB 0 3, bytestream -23
[h264 @ 0000000005782fc0] error while decoding MB 1 36, bytestream -16
[h264 @ 0000000005782fc0] concealing 3462 DC, 3462 AC, 3462 MV errors in P frame
[h264 @ 0000000005782840] top block unavailable for requested intra4x4 mode -1 at 0 12
[h264 @ 0000000005490380] top block unavailable for requested intra4x4 mode -1 at 0 12
[h264 @ 0000000005490380] error while decoding MB 0 12, bytestream 917
[h264 @ 0000000005782840] error while decoding MB 0 12, bytestream 4415
[h264 @ 0000000005782840] top block unavailable for requested intra mode at 22 18
[h264 @ 0000000005782840] error while decoding MB 22 18, bytestream 1477
[h264 @ 0000000005782840] top block unavailable for requested intra4x4 mode -1 at 8 30
[h264 @ 0000000005782840] error while decoding MB 8 30, bytestream 4272
[h264 @ 0000000005782840] error while decoding MB 67 37, bytestream -10
[h264 @ 0000000005782840] top block unavailable for requested intra mode at 51 42
[h264 @ 0000000005782840] error while decoding MB 51 42, bytestream 3845
[h264 @ 0000000005782840] concealing 3309 DC, 3309 AC, 3309 MV errors in P frame
[h264 @ 0000000005490380] concealing 3296 DC, 3296 AC, 3296 MV errors in P frame
[h264 @ 00000000057914c0] top block unavailable for requested intra4x4 mode -1 at 0 12
[h264 @ 00000000057914c0] error while decoding MB 0 12, bytestream 4371
[h264 @ 00000000057914c0] top block unavailable for requested intra4x4 mode -1 at 5 18
[h264 @ 00000000057914c0] error while decoding MB 5 18, bytestream 5007
[h264 @ 00000000057914c0] error while decoding MB 46 26, bytestream -6
[h264 @ 00000000057914c0] top block unavailable for requested intra mode at 37 36
[h264 @ 00000000057914c0] error while decoding MB 37 36, bytestream 1271
[h264 @ 00000000057914c0] concealing 2953 DC, 2953 AC, 2953 MV errors in P frame
[h264 @ 0000000005791960] concealing 3391 DC, 3391 AC, 3391 MV errors in P frame
[h264 @ 0000000005782840] top block unavailable for requested intra4x4 mode -1 at 5 0
[h264 @ 0000000005782840] error while decoding MB 5 0, bytestream 1025
[h264 @ 0000000005782fc0] top block unavailable for requested intra4x4 mode -1 at 47 30
[h264 @ 0000000005782fc0] error while decoding MB 47 30, bytestream 584
[h264 @ 0000000005782840] top block unavailable for requested intra4x4 mode -1 at 8 6
[h264 @ 0000000005782840] error while decoding MB 8 6, bytestream 4699
[h264 @ 0000000005782fc0] concealing 3600 DC, 3600 AC, 3600 MV errors in P frame
[h264 @ 0000000005782840] top block unavailable for requested intra4x4 mode -1 at 0 12
[h264 @ 0000000005782840] error while decoding MB 0 12, bytestream 4586
[h264 @ 0000000005782840] error while decoding MB 58 19, bytestream -6
[h264 @ 0000000005782840] top block unavailable for requested intra mode at 44 30
[h264 @ 0000000005782840] error while decoding MB 44 30, bytestream 3906
[h264 @ 0000000005490380] top block unavailable for requested intra4x4 mode -1 at 37 0
[h264 @ 0000000005490380] error while decoding MB 37 0, bytestream 805
[h264 @ 0000000005490380] top block unavailable for requested intra4x4 mode -1 at 18 6
[h264 @ 0000000005490380] error while decoding MB 18 6, bytestream 4681
[h264 @ 0000000005782840] concealing 3271 DC, 3271 AC, 3271 MV errors in P frame
[h264 @ 0000000005490380] top block unavailable for requested intra4x4 mode -1 at 53 18
[h264 @ 0000000005490380] error while decoding MB 53 18, bytestream 4391
[h264 @ 0000000005490380] top block unavailable for requested intra4x4 mode -1 at 2 24
[h264 @ 0000000005490380] error while decoding MB 2 24, bytestream 1268
[h264 @ 0000000005490380] top block unavailable for requested intra4x4 mode -1 at 0 30
[h264 @ 0000000005490380] error while decoding MB 0 30, bytestream 4550
[h264 @ 0000000005490380] top block unavailable for requested intra4x4 mode -1 at 0 36
[h264 @ 0000000005490380] error while decoding MB 0 36, bytestream 4722
[h264 @ 0000000005490380] top block unavailable for requested intra4x4 mode -1 at 0 42
[h264 @ 0000000005490380] error while decoding MB 0 42, bytestream 792
[h264 @ 0000000005490380] concealing 3596 DC, 3596 AC, 3596 MV errors in P frame
[h264 @ 00000000057914c0] concealing 3598 DC, 3598 AC, 3598 MV errors in P frame
[h264 @ 0000000005791960] top block unavailable for requested intra mode at 25 0
[h264 @ 0000000005791960] error while decoding MB 25 0, bytestream 964
[h264 @ 0000000005791960] top block unavailable for requested intra4x4 mode -1 at 0 12
[h264 @ 0000000005791960] error while decoding MB 0 12, bytestream 4593
[h264 @ 0000000005791960] top block unavailable for requested intra4x4 mode -1 at 29 24
[h264 @ 0000000005791960] error while decoding MB 29 24, bytestream 954
[h264 @ 0000000005791960] top block unavailable for requested intra mode at 3 30
[h264 @ 0000000005791960] error while decoding MB 3 30, bytestream 799
[h264 @ 0000000005791960] concealing 3118 DC, 3118 AC, 3118 MV errors in P frame
[h264 @ 0000000005782fc0] top block unavailable for requested intra4x4 mode -1 at 0 30
[h264 @ 0000000005782fc0] error while decoding MB 0 30, bytestream 778
[h264 @ 0000000005782840] error while decoding MB 31 4, bytestream -8
[h264 @ 0000000005782fc0] concealing 3600 DC, 3600 AC, 3600 MV errors in P frame
[h264 @ 0000000005782840] top block unavailable for requested intra4x4 mode -1 at 4 6
[h264 @ 0000000005782840] error while decoding MB 4 6, bytestream 4729
[h264 @ 0000000005782840] top block unavailable for requested intra4x4 mode -1 at 0 12
[h264 @ 0000000005782840] error while decoding MB 0 12, bytestream 4431
[h264 @ 0000000005782840] top block unavailable for requested intra4x4 mode -1 at 38 18
[h264 @ 0000000005782840] error while decoding MB 38 18, bytestream 4798
[h264 @ 0000000005782840] top block unavailable for requested intra mode at 31 24
[h264 @ 0000000005782840] error while decoding MB 31 24, bytestream 752
[h264 @ 0000000005782840] top block unavailable for requested intra mode at 5 30
[h264 @ 0000000005782840] error while decoding MB 5 30, bytestream 3844
[h264 @ 0000000005782840] top block unavailable for requested intra4x4 mode -1 at 38 42
[h264 @ 0000000005782840] error while decoding MB 38 42, bytestream 3739
[h264 @ 0000000005782840] concealing 3291 DC, 3291 AC, 3291 MV errors in P frame
[h264 @ 0000000005490380] Delayed frames seen. Reenabling low delay requires a codec flush.
[h264 @ 0000000005490380] Reinit context to 1280x720, pix_fmt: yuvj420p
[h264 @ 00000000057914c0] error while decoding MB 10 17, bytestream -6
[h264 @ 0000000005490380] left block unavailable for requested intra4x4 mode -1 at 0 16
[h264 @ 0000000005490380] error while decoding MB 0 16, bytestream 3934
[h264 @ 00000000057914c0] concealing 3239 DC, 3239 AC, 3239 MV errors in P frame
[h264 @ 0000000005490380] left block unavailable for requested intra mode at 0 18
[h264 @ 0000000005490380] error while decoding MB 0 18, bytestream 3068
[h264 @ 0000000005490380] left block unavailable for requested intra4x4 mode -1 at 0 33
[h264 @ 0000000005490380] error while decoding MB 0 33, bytestream 745
[h264 @ 0000000005490380] left block unavailable for requested intra4x4 mode -1 at 0 38
[h264 @ 0000000005490380] error while decoding MB 0 38, bytestream 4460
[h264 @ 0000000005490380] concealing 2769 DC, 2769 AC, 2769 MV errors in I frame
[h264 @ 0000000005782840] error while decoding MB 79 24, bytestream -7
[h264 @ 0000000005782840] concealing 3570 DC, 3570 AC, 3570 MV errors in P frame

There is a problem with my source? What can I do?

Thank you :)

Answer 1

It may be due to the fact that you are trying to play back part of a raw .264 stream.

To playback an raw .264 file the file should start with an SPS, PPS, and IDR frame (which has no dependencies on previous frames). If you are starting playback at some random part of the stream, then this won't work and the artifacts you are seeing are likely prediction errors based on missing reference frames.