I am trying to transcode from h264 in TS to huffyuv format in avi ffmpeg reports: Duration: 00:00:38.35 but after transcode: frame= 1811 time=70.87 maybe its something about that: ...ffmpeg must be aware that some coded pictures are fields and some coded pictures are frames. thank you ffmpeg -i 2x_video_time_after_transcode_to_huffyuv.ts -vcodec huffyuv -acodec copy out.avi FFmpeg version SVN-r15872, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: libavutil 49.12. 0 / 49.12. 0 libavcodec 52. 3. 0 / 52. 3. 0 libavformat 52.23. 1 / 52.23. 1 libavdevice 52. 1. 0 / 52. 1. 0 built on Nov 18 2008 15:16:01, gcc: 4.3.2 [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]non-existing PPS referenced [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]non-existing PPS referenced [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]non-existing PPS referenced [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]non-existing PPS referenced [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! [h264 @ 0x9374040]non-existing PPS referenced [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Input #0, mpegts, from '2x_video_time_after_transcode_to_huffyuv.ts': Duration: 00:00:38.35, start: 38649.401944, bitrate: 2135 kb/s Program 1 LTV Program 2 LTV2 Program 3 LNK Program 4 Info TV Program 5 LIUKS! Program 7 TV1 Program 8 TV3 Program 9 TV6 Program 10 BTV Stream #0.0[0x3e9]: Video: h264, yuv420p, 544x576 [PAR 16:11 DAR 136:99], 25.00 tb(r) Stream #0.1[0x3ea](lit): Audio: mp2, 48000 Hz, stereo, s16, 192 kb/s Program 6 testas Output #0, avi, to 'out.avi': Stream #0.0: Video: huffyuv, yuv422p, 544x576 [PAR 16:11 DAR 136:99], q=2-31, 200 kb/s, 25.00 tb(c) Stream #0.1(lit): Audio: 0x0000, 48000 Hz, stereo, s16, 192 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 [huffyuv @ 0x937f920]using huffyuv 2.2.0 or newer interlacing flag Press [q] to stop encoding [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]non-existing PPS referenced [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]non-existing PPS referenced [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]non-existing PPS referenced [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]non-existing PPS referenced [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]B picture before any references, skipping [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]non-existing PPS referenced [h264 @ 0x9374040]decode_slice_header error [h264 @ 0x9374040]no frame! Error while decoding stream #0.0 [h264 @ 0x9374040]error while decoding MB 31 25, bytestream (-47)9.1kbits/s [h264 @ 0x9374040]concealing 392 DC, 392 AC, 392 MV errors frame= 1811 fps= 45 q=0.0 Lsize= 595690kB time=70.87 bitrate=68855.0kbits/s video:594706kB audio:862kB global headers:0kB muxing overhead 0.020387%