I'm trying to convert a number of DVDs to MP4. Some of them work, others result in lots of error messages and distorted output. All of them play correctly in VLC if I open the IFO file, but the ones that give distorted output fail to play in DVD if I open the VOB file. I'm using the following command:
ffmpeg -i 'concat:VTS_02_1.VOB|VTS_02_2.VOB|VTS_02_3.VOB|VTS_02_4.VOB' out.mp4 What stands out to me is that this message is only present for the DVDs that fail: [mpeg2video @ 0x7fffcfcfc0c0] ignoring pic cod ext after 0 More output, including lots of error messages for each frame, is included below. Does anyone know what this means and how I can fix it? Thanks in advance for any help! ------------------------------------------------------ ffmpeg version 4.2.3 Copyright (c) 2000-2020 the FFmpeg developers built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04) configuration: --prefix=/home/erik/packages libavutil 56. 31.100 / 56. 31.100 libavcodec 58. 54.100 / 58. 54.100 libavformat 58. 29.100 / 58. 29.100 libavdevice 58. 8.100 / 58. 8.100 libavfilter 7. 57.100 / 7. 57.100 libswscale 5. 5.100 / 5. 5.100 libswresample 3. 5.100 / 3. 5.100 [mpeg2video @ 0x7fffcfcfc0c0] ignoring pic cod ext after 0 Input #0, mpeg, from 'concat:VTS_02_1.VOB|VTS_02_2.VOB|VTS_02_3.VOB|VTS_02_4.VOB': Duration: 00:00:05.98, start: 0.287267, bitrate: 4707454 kb/s Stream #0:0[0x1bf]: Data: dvd_nav_packet Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, top first), 720x576 [SAR 64:45 DAR 16:9], 8500 kb/s, 25 fps, 50 tbr, 90k tbn, 50 tbc Stream #0:2[0x80]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s Stream #0:3[0x81]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s Stream #0:4[0x82]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s Stream #0:5[0x83]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s Stream #0:6[0x84]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s Stream #0:7[0x85]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s Stream #0:8[0x86]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s Stream mapping: Stream #0:1 -> #0:0 (mpeg2video (native) -> mpeg4 (native)) Stream #0:2 -> #0:1 (ac3 (native) -> aac (native)) Press [q] to stop, [?] for help [ac3 @ 0x7fffcfd24f40] exponent 25 is out-of-range [ac3 @ 0x7fffcfd24f40] error decoding the audio block Error while decoding stream #0:2: Error number -16976906 occurred [ac3 @ 0x7fffcfd24f40] expacc 127 is out-of-range [ac3 @ 0x7fffcfd24f40] error decoding the audio block Error while decoding stream #0:2: Error number -16976906 occurred [aac @ 0x7fffcfd19240] Using a PCE to encode channel layout "5.1(side)" [mpeg2video @ 0x7fffcfcff180] ignoring pic cod ext after 0 Error while decoding stream #0:2: Error number -16976906 occurred [ac3 @ 0x7fffcfd24f40] expacc 125 is out-of-range [ac3 @ 0x7fffcfd24f40] error decoding the audio block Error while decoding stream #0:2: Error number -16976906 occurred [ac3 @ 0x7fffcfd24f40] exponent -1 is out-of-range [ac3 @ 0x7fffcfd24f40] error decoding the audio block Error while decoding stream #0:2: Error number -16976906 occurred Last message repeated 1 times [mpeg2video @ 0x7fffcfcff180] warning: first frame is no keyframe [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 7 0 [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 11 20 [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 12 13 [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 5 35 [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 2 34 [mpeg2video @ 0x7fffcfcff180] Warning MVs not available [mpeg2video @ 0x7fffcfcff180] concealing 1620 DC, 1620 AC, 1620 MV errors in P frame Output #0, mp4, to 'out.mp4': Metadata: encoder : Lavf58.29.100 Stream #0:0: Video: mpeg4 (mp4v / 0x7634706D), yuv420p, 720x576 [SAR 64:45 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 12800 tbn, 25 tbc Metadata: encoder : Lavc58.54.100 mpeg4 Side data: cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1 Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1(side), fltp, 394 kb/s Metadata: encoder : Lavc58.54.100 aac [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 3 0 [mpeg2video @ 0x7fffcfcff180] Invalid mb type in P-frame at 10 10 [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 18 20 [mpeg2video @ 0x7fffcfcff180] Invalid mb type in P-frame at 13 35 [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 33 31 [mpeg2video @ 0x7fffcfcff180] Warning MVs not available [mpeg2video @ 0x7fffcfcff180] concealing 945 DC, 945 AC, 945 MV errors in P frame concat:VTS_02_1.VOB|VTS_02_2.VOB|VTS_02_3.VOB|VTS_02_4.VOB: corrupt decoded frame in stream 1 [ac3 @ 0x7fffcfd24f40] exponent -1 is out-of-range [ac3 @ 0x7fffcfd24f40] error decoding the audio block Error while decoding stream #0:2: Error number -16976906 occurred [ac3 @ 0x7fffcfd24f40] expacc 127 is out-of-range [ac3 @ 0x7fffcfd24f40] error decoding the audio block Error while decoding stream #0:2: Error number -16976906 occurred [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 27 5 [mpeg2video @ 0x7fffcfcff180] skip with previntra [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 43 15 [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 10 27 [mpeg2video @ 0x7fffcfcff180] Warning MVs not available [mpeg2video @ 0x7fffcfcff180] concealing 900 DC, 900 AC, 900 MV errors in B frame concat:VTS_02_1.VOB|VTS_02_2.VOB|VTS_02_3.VOB|VTS_02_4.VOB: corrupt decoded frame in stream 1 [mpeg2video @ 0x7fffcfcff180] ignoring pic cod ext after 0 concat:VTS_02_1.VOB|VTS_02_2.VOB|VTS_02_3.VOB|VTS_02_4.VOB: corrupt decoded frame in stream 1 [ac3 @ 0x7fffcfd24f40] expacc 126 is out-of-range [ac3 @ 0x7fffcfd24f40] error decoding the audio block Error while decoding stream #0:2: Error number -16976906 occurred [ac3 @ 0x7fffcfd24f40] exponent -1 is out-of-range [ac3 @ 0x7fffcfd24f40] error decoding the audio block Error while decoding stream #0:2: Error number -16976906 occurred [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 2 8 [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 14 29 [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 43 26 [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 18 22 [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 11 3 [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 13 15 [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 15 33 [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 31 35 [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 6 3 [mpeg2video @ 0x7fffcfcff180] invalid cbp 0 at 0 4 [mpeg2video @ 0x7fffcfcff180] Invalid mb type in P-frame at 6 5 [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 12 6 [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 9 7 [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 15 13 [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 2 14 [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 1 15 [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 20 16 [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 5 17 [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 8 18 [mpeg2video @ 0x7fffcfcff180] Invalid mb type in P-frame at 12 24 [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 8 25 [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 6 26 [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 1 27 [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 43 30 [mpeg2video @ 0x7fffcfcff180] invalid cbp -1 at 13 30 [mpeg2video @ 0x7fffcfcff180] Invalid mb type in P-frame at 2 33 [mpeg2video @ 0x7fffcfcff180] ac-tex damaged at 25 34 [mpeg2video @ 0x7fffcfcff180] Warning MVs not available [mpeg2video @ 0x7fffcfcff180] concealing 1305 DC, 1305 AC, 1305 MV errors in P frame [mpeg2video @ 0x7fffcfcff180] 00 motion_type at 28 4 [mpeg2video @ 0x7fffcfcff180] Warning MVs not available [mpeg2video @ 0x7fffcfcff180] concealing 270 DC, 270 AC, 270 MV errors in B frame concat:VTS_02_1.VOB|VTS_02_2.VOB|VTS_02_3.VOB|VTS_02_4.VOB: corrupt decoded frame in stream 1 Last message repeated 1 times [ac3 @ 0x7fffcfd24f40] exponent -2 is out-of-range [ac3 @ 0x7fffcfd24f40] error decoding the audio block Error while decoding stream #0:2: Error number -16976906 occurred (more of the same follows) _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".