[FFmpeg-user] Failing to concatenate 2 mp4 fragments without re-encoding

sergiogiogio at ovi.com sergiogiogio at ovi.com
Fri Feb 1 05:31:49 CET 2013


<Carl Eugen Hoyos cehoyos at ag.or.at> writes:
> <sergiogiogio <at> ovi.com> writes:
>
> > I am trying to concatenate 2 small mp4 fragments (H264 main, AAC)
>
> I suggest you try the new concat demuxer (that is different 
> from the concat protocol you have tested), find the 
> documentation here:
> https://ffmpeg.org/ffmpeg-formats.html#concat
Thanks, I tried the concat demuxer (-f concat -i concat.txt) but got the same error message in ffplay/ffprobe.
>
> Please do never post a part of the console output, always 
> post the complete, unedited console output (at least the 
> first 50 and the last 50 lines).
>
> Carl Eugen

The first and last lines of console output are below:
====
"%FFMPEG_DIR%\ffprobe.exe" -show_frames -show_streams 2parts.orig.mp4.ts.concat.ts.mp4.ts 2>&1 > 2parts.orig.mp4.ts.concat.ts.mp4.ts.debug.txt
ffprobe version N-49448-gdc8dd2f Copyright (c) 2007-2013 the FFmpeg developers built on Jan 29 2013 17:50:41 with gcc 4.7.2 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib libavutil      52. 17.100 / 52. 17.100 libavcodec     54. 91.100 / 54. 91.100 libavformat    54. 61.104 / 54. 61.104 libavdevice    54.  3.102 / 54.  3.102 libavfilter     3. 34.101 /  3. 34.101 libswscale      2.  2.100 /  2.  2.100
 libswresample   0. 17.102 /  0. 17.102 libpostproc    52.  2.100 / 52.  2.100
[mpegts @ 002df8e0] max_analyze_duration 5000000 reached at 5000000 microseconds
Input #0, mpegts, from '2parts.orig.mp4.ts.concat.ts.mp4.ts': Duration: 00:03:43.69, start: 1.400000, bitrate: 758 kb/s Program 1 Metadata: service_name    : Service01 service_provider: FFmpeg Stream #0:0[0x100]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 640x360 [SAR 405:404 DAR 180:101], 25 fps, 25 tbr, 90k tbn, 50 tbc Stream #0:1[0x101](und): Audio: aac ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp, 81 kb/s
[h264 @ 0343a860] top block unavailable for requested intra4x4 mode -1 at 0 0
[h264 @ 0343a860] error while decoding MB 0 0, bytestream (18883)
[h264 @ 0343a860] concealing 920 DC, 920 AC, 920 MV errors in I frame
[h264 @ 03d2c360] [h264 @ 03d8b120] concealing 710 DC, 710 AC, 710 MV errors in P frame
error while decoding MB 27 6, bytestream (-6)
[h264 @ 03e34c80] [h264 @ 03e348a0] [h264 @ 03e35480] concealing 881 DC, 881 AC, 881 MV errors in P frame
[h264 @ 03d8b120] error while decoding MB 32 8, bytestream (-7)
error while decoding MB 31 16, bytestream (-7)
[h264 @ 03e35480] [h264 @ 03df0060] concealing 702 DC, 702 AC, 702 MV errors in B frame
concealing 298 DC, 298 AC, 298 MV errors in B frame
[h264 @ 03439c80] [h264 @ 0343a860] [h264 @ 03e348a0] concealing 378 DC, 378 AC, 378 MV errors in B frame
error while decoding MB 36 7, bytestream (-5)
top block unavailable for requested intra mode at 5 0
concealing 617 DC, 617 AC, 617 MV errors in B frame
[h264 @ 03439c80] [h264 @ 0343a860] concealing 653 DC, 653 AC, 653 MV errors in B frame
error while decoding MB 5 0, bytestream (4285)
[h264 @ 0343a860] concealing 920 DC, 920 AC, 920 MV errors in P frame
[h264 @ 03d2c360] error while decoding MB 25 21, bytestream (-7)
[h264 @ 03d8b120] error while decoding MB 39 5, bytestream (-5)
[h264 @ 03d2c360] concealing 104 DC, 104 AC, 104 MV errors in B frame
[h264 @ 03d8b120] concealing 730 DC, 730 AC, 730 MV errors in B frame
[h264 @ 03e344a0] [h264 @ 03e348a0] error while decoding MB 18 11, bytestream (-10)
concealing 871 DC, 871 AC, 871 MV errors in P frame
[h264 @ 03e34c80] [h264 @ 03e35480] [h264 @ 03e344a0] concealing 722 DC, 722 AC, 722 MV errors in B frame
concealing 555 DC, 555 AC, 555 MV errors in B frame
concealing 511 DC, 511 AC, 511 MV errors in B frame
[h264 @ 03df0060] error while decoding MB 23 13, bytestream (-21)
[h264 @ 03df0060] concealing 426 DC, 426 AC, 426 MV errors in B frame
[h264 @ 03439c80] concealing 815 DC, 815 AC, 815 MV errors in P frame
[h264 @ 0343a860] concealing 557 DC, 557 AC, 557 MV errors in B frame
[h264 @ 03d2c360] concealing 378 DC, 378 AC, 378 MV errors in B frame
[h264 @ 03d8b120] error while decoding MB 30 17, bytestream (-10)
[h264 @ 03e344a0] top block unavailable for requested intra mode at 2 0
[h264 @ 03d8b120] concealing 259 DC, 259 AC, 259 MV errors in B frame
[h264 @ 03e344a0] error while decoding MB 2 0, bytestream (1391)
[h264 @ 03e344a0] concealing 920 DC, 920 AC, 920 MV errors in P frame
[h264 @ 03e348a0] [h264 @ 03e34c80] [h264 @ 03e35480] concealing 800 DC, 800 AC, 800 MV errors in B frame
concealing 549 DC, 549 AC, 549 MV errors in B frame
concealing 629 DC, 629 AC, 629 MV errors in B frame
[h264 @ 03df0060] top block unavailable for requested intra4x4 mode -1 at 0 0
[h264 @ 03df0060] error while decoding MB 0 0, bytestream (21880)
[h264 @ 03df0060] concealing 920 DC, 920 AC, 920 MV errors in I frame
[h264 @ 03439c80] concealing 839 DC, 839 AC, 839 MV errors in P frame
[h264 @ 0343a860] concealing 864 DC, 864 AC, 864 MV errors in B frame
[h264 @ 03d2c360] error while decoding MB 27 6, bytestream (-5)
[h264 @ 03d8b120] top block unavailable for requested intra4x4 mode -1 at 11 0
[h264 @ 03d2c360] concealing 702 DC, 702 AC, 702 MV errors in B frame
[h264 @ 03d8b120] error while decoding MB 11 0, bytestream (4759)
[h264 @ 03d8b120] [h264 @ 03e344a0] concealing 920 DC, 920 AC, 920 MV errors in P frame
concealing 875 DC, 875 AC, 875 MV errors in B frame
[h264 @ 03e348a0] error while decoding MB 35 9, bytestream (-6)
[h264 @ 03e348a0] [h264 @ 03e34c80] concealing 574 DC, 574 AC, 574 MV errors in B frame
error while decoding MB 23 2, bytestream (-16)
[h264 @ 03e35480] [h264 @ 03e34c80] concealing 621 DC, 621 AC, 621 MV errors in P frame
concealing 866 DC, 866 AC, 866 MV errors in B frame
[h264 @ 03df0060] concealing 897 DC, 897 AC, 897 MV errors in B frame
[h264 @ 03439c80] [h264 @ 0343a860] concealing 849 DC, 849 AC, 849 MV errors in B frame
concealing 890 DC, 890 AC, 890 MV errors in B frame
[h264 @ 03d2c360] concealing 879 DC, 879 AC, 879 MV errors in P frame
[h264 @ 03d8b120] concealing 897 DC, 897 AC, 897 MV errors in B frame
[h264 @ 03e344a0] error while decoding MB 1 7, bytestream (-6)
[h264 @ 03e348a0] [h264 @ 03e344a0] error while decoding MB 7 2, bytestream (-6)
concealing 688 DC, 688 AC, 688 MV errors in B frame
[h264 @ 03e348a0] [h264 @ 03e34c80] [h264 @ 03e35480] concealing 882 DC, 882 AC, 882 MV errors in B frame
concealing 644 DC, 644 AC, 644 MV errors in P frame
concealing 819 DC, 819 AC, 819 MV errors in B frame
[h264 @ 03df0060] error while decoding MB 13 5, bytestream (-12)
[h264 @ 03df0060] concealing 756 DC, 756 AC, 756 MV errors in B frame
[h264 @ 03439c80] concealing 897 DC, 897 AC, 897 MV errors in B frame
[h264 @ 0343a860] [h264 @ 03d2c360] concealing 504 DC, 504 AC, 504 MV errors in P frame
concealing 897 DC, 897 AC, 897 MV errors in B frame
[h264 @ 03d8b120] error while decoding MB 37 5, bytestream (-5)
[h264 @ 03d8b120] concealing 732 DC, 732 AC, 732 MV errors in B frame
[h264 @ 03e344a0] concealing 897 DC, 897 AC, 897 MV errors in B frame
[h264 @ 03e348a0] concealing 850 DC, 850 AC, 850 MV errors in P frame
[h264 @ 03e34c80] concealing 770 DC, 770 AC, 770 MV errors in B frame
[h264 @ 03e35480] error while decoding MB 25 2, bytestream (-7)
[h264 @ 03e35480] concealing 864 DC, 864 AC, 864 MV errors in B frame
...
[h264 @ 03f80060] concealing 485 DC, 485 AC, 485 MV errors in B frame
[h264 @ 03949c80] concealing 653 DC, 653 AC, 653 MV errors in B frame
[h264 @ 0394a860] concealing 695 DC, 695 AC, 695 MV errors in P frame
[h264 @ 03ebc580] concealing 507 DC, 507 AC, 507 MV errors in B frame
[h264 @ 03f1b560] concealing 645 DC, 645 AC, 645 MV errors in B frame
[h264 @ 03fc4ca0] [h264 @ 03fc50a0] concealing 724 DC, 724 AC, 724 MV errors in B frame
concealing 709 DC, 709 AC, 709 MV errors in P frame
[h264 @ 03fc58c0] concealing 483 DC, 483 AC, 483 MV errors in B frame
[h264 @ 03f60420] concealing 586 DC, 586 AC, 586 MV errors in B frame
[h264 @ 03f80060] concealing 617 DC, 617 AC, 617 MV errors in B frame
[h264 @ 03949c80] concealing 651 DC, 651 AC, 651 MV errors in P frame
[h264 @ 0394a860] concealing 726 DC, 726 AC, 726 MV errors in B frame
[h264 @ 03ebc580] concealing 682 DC, 682 AC, 682 MV errors in B frame
[h264 @ 03f1b560] error while decoding MB 28 7, bytestream (-13)
[h264 @ 03fc4ca0] concealing 374 DC, 374 AC, 374 MV errors in P frame
[h264 @ 03f1b560] concealing 661 DC, 661 AC, 661 MV errors in B frame
[h264 @ 03fc50a0] concealing 737 DC, 737 AC, 737 MV errors in B frame
[h264 @ 03fc58c0] error while decoding MB 12 7, bytestream (-11)
[h264 @ 03f60420] [h264 @ 03f80060] concealing 545 DC, 545 AC, 545 MV errors in B frame
[h264 @ 03fc58c0] concealing 553 DC, 553 AC, 553 MV errors in P frame
concealing 677 DC, 677 AC, 677 MV errors in B frame
[h264 @ 03949c80] [h264 @ 0394a860] concealing 607 DC, 607 AC, 607 MV errors in B frame
[h264 @ 03ebc580] error while decoding MB 20 7, bytestream (-18)
concealing 716 DC, 716 AC, 716 MV errors in B frame
[h264 @ 0394a860] concealing 669 DC, 669 AC, 669 MV errors in B frame
[h264 @ 03f1b560] concealing 534 DC, 534 AC, 534 MV errors in P frame
[h264 @ 03fc4ca0] error while decoding MB 35 8, bytestream (-7)
[h264 @ 03fc4ca0] [h264 @ 03fc58c0] concealing 614 DC, 614 AC, 614 MV errors in B frame
[h264 @ 03fc50a0] concealing 664 DC, 664 AC, 664 MV errors in B frame
error while decoding MB 27 7, bytestream (-5)
[h264 @ 03f60420] [h264 @ 03f80060] concealing 772 DC, 772 AC, 772 MV errors in P frame
[h264 @ 03949c80] concealing 708 DC, 708 AC, 708 MV errors in B frame
[h264 @ 03fc50a0] concealing 694 DC, 694 AC, 694 MV errors in B frame
concealing 662 DC, 662 AC, 662 MV errors in B frame
[h264 @ 0394a860] error while decoding MB 27 6, bytestream (-9)
[h264 @ 0394a860] concealing 702 DC, 702 AC, 702 MV errors in B frame
[h264 @ 03ebc580] concealing 495 DC, 495 AC, 495 MV errors in P frame
[h264 @ 03f1b560] concealing 565 DC, 565 AC, 565 MV errors in B frame
[h264 @ 03fc4ca0] concealing 667 DC, 667 AC, 667 MV errors in B frame
[h264 @ 03fc50a0] error while decoding MB 2 7, bytestream (-9)
[h264 @ 03fc58c0] concealing 407 DC, 407 AC, 407 MV errors in P frame
[h264 @ 03f60420] [h264 @ 03fc50a0] top block unavailable for requested intra4x4 mode -1 at 0 0
concealing 687 DC, 687 AC, 687 MV errors in B frame
[h264 @ 03f60420] error while decoding MB 0 0, bytestream (16532)
[h264 @ 03f60420] concealing 920 DC, 920 AC, 920 MV errors in I frame
[h264 @ 03f80060] top block unavailable for requested intra mode at 26 0
[h264 @ 03f80060] error while decoding MB 26 0, bytestream (1640)
[h264 @ 03f80060] [h264 @ 03949c80] concealing 920 DC, 920 AC, 920 MV errors in P frame
concealing 897 DC, 897 AC, 897 MV errors in B frame
[h264 @ 0394a860] error while decoding MB 2 15, bytestream (-5)
[h264 @ 0394a860] concealing 367 DC, 367 AC, 367 MV errors in B frame

====




>________________________________
> From: "sergiogiogio at ovi.com" <sergiogiogio at ovi.com>
>To: "ffmpeg-user at ffmpeg.org" <ffmpeg-user at ffmpeg.org> 
>Sent: Thursday, January 31, 2013 11:53 PM
>Subject: Failing to concatenate 2 mp4 fragments without re-encoding
> 
>
>Hello,
>
>
>I am trying to concatenate 2 small mp4 fragments (H264 main, AAC) without re-encoding.
>So far I have not succeeded in generating a "compatible" mp4 output file: my Sony Bravia TV renders video and audio of the first part correctly but fails to play the video of  the second part immediately after the "junction point", while audio continues normally.
>After testing I discovered that I could make ffplay fail exactly in the same way as my TV by converting my mp4 output file to mpeg2 ts format.
>
>
>Here are my steps (command lines and clip URLs below):
>1- convert part1 and part2 from mp4 to mpeg2 ts with ffmpeg
>2- concatenate part1 and part2 with ffmpeg
>3 -run ffprobe or ffplay: no error
>
>4- convert output from mpeg2 ts to mp4
>5- convert output from mp4 to mpeg2 ts
>6- run ffprobe or ffplay: lots of errors (reproduced below)
>
>
>Tests were carried out with 
>I have tried using MP4Box and TsRemuX with the same result (incompatible file).
>I have also tried to demux the original mp4 files to  h264 and aac bit streams, concatenating the streams and remuxing the into mp4, with again the same results.
>
>
>Thanks in advance for any help or suggestion.
>sergiogiogio
>
>
>
>
>1- Command lines:
>Note: the fragments are from a french TV national news program (18MB in total)
>========
>SET FFMPEG_DIR=..\bin
>SET CURL_DIR=..\bin
>
>
>"%CURL_DIR%\curl.exe" "http://projects.developer.nokia.com/SingaporeBus/files/ffmpeg/part1.orig.mp4" -o "part1.orig.mp4"
>"%CURL_DIR%\curl.exe" "http://projects.developer.nokia.com/SingaporeBus/files/ffmpeg/part2.orig.mp4" -o "part2.orig.mp4"
>
>
>REM Convert part1 from MP4 to TS
>"%FFMPEG_DIR%\ffmpeg.exe" -i part1.orig.mp4 -bsf h264_mp4toannexb -c copy -y part1.orig.mp4.ts
>"%FFMPEG_DIR%\ffprobe.exe" -show_frames -show_streams part1.orig.mp4.ts > part1.orig.mp4.ts.debug.txt
>
>
>REM Convert part2 from MP4 to TS
>"%FFMPEG_DIR%\ffmpeg.exe" -i part2.orig.mp4 -bsf h264_mp4toannexb -c copy -y part2.orig.mp4.ts
>"%FFMPEG_DIR%\ffprobe.exe" -show_frames -show_streams part2.orig.mp4.ts > part2.orig.mp4.ts.debug.txt
>
>
>REM Concat part1 and part2 (TS) = (part1|part2)
>"%FFMPEG_DIR%\ffmpeg.exe" -i "concat:part1.orig.mp4.ts|part2.orig.mp4.ts" -c copy -y 2parts.orig.mp4.ts.concat.ts
>"%FFMPEG_DIR%\ffprobe.exe" -show_frames -show_streams 2parts.orig.mp4.ts.concat.ts > 2parts.orig.mp4.ts.concat.ts.debug.txt
>
>
>REM Convert (part1|part2) from TS to mp4
>"%FFMPEG_DIR%\ffmpeg.exe" -i 2parts.orig.mp4.ts.concat.ts -absf aac_adtstoasc -c copy -y 2parts.orig.mp4.ts.concat.ts.mp4
>"%FFMPEG_DIR%\ffprobe.exe" -show_frames -show_streams 2parts.orig.mp4.ts.concat.ts.mp4 > 2parts.orig.mp4.ts.concat.ts.mp4.debug.txt
>
>
>REM Convert (part1|part2) from mp4 to ts
>"%FFMPEG_DIR%\ffmpeg.exe" -i 2parts.orig.mp4.ts.concat.ts.mp4 -bsf h264_mp4toannexb -c copy -y 2parts.orig.mp4.ts.concat.ts.mp4.ts
>"%FFMPEG_DIR%\ffprobe.exe" -show_frames -show_streams 2parts.orig.mp4.ts.concat.ts.mp4.ts 2>&1 > 2parts.orig.mp4.ts.concat.ts.mp4.ts.debug.txt
>=========
>
>
>
>2- Error output of ffprobe:
>=========
>
>[h264 @ 0261d020] top block unavailable for requested intra4x4 mode -1 at 0 0
>[h264 @ 0261d020] error while decoding MB 0 0, bytestream (18883)
>[h264 @ 0261d020] concealing 920 DC, 920 AC, 920 MV errors in I frame
>[h264 @ 028009a0] [h264 @ 0252a800] concealing 710 DC, 710 AC, 710 MV errors in P frame
>error while decoding MB 29 6, bytestream (-10)
>[h264 @ 0252a800] concealing 700 DC, 700 AC, 700 MV errors in B frame
>[h264 @ 028009a0] error while decoding MB 34 8, bytestream (-5)
>[h264 @ 0252a800] concealing 881 DC, 881 AC, 881 MV errors in P frame
>[h264 @ 028009a0] [h264 @ 0261d020] concealing 615 DC, 615 AC, 615 MV errors in B frame
>error while decoding MB 31 16, bytestream (-7)
>[h264 @ 0261d020] concealing 298 DC, 298 AC, 298 MV errors in B frame
>[h264 @ 028009a0] concealing 378 DC, 378 AC, 378 MV errors in B frame
>[h264 @ 0252a800] error while decoding MB 36 7, bytestream (-7)
>[h264 @ 0261d020] [h264 @ 0252a800] top block unavailable for requested intra mode at 5 0
>concealing 653 DC, 653 AC, 653 MV errors in B frame
>...
>=========
>
>
>
>3- ffmpeg version
>=========
>ffmpeg version N-49448-gdc8dd2f Copyright (c) 2000-2013 the FFmpeg developers
>  built on Jan 29 2013 17:50:41 with gcc 4.7.2 (GCC)
>  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
>  libavutil      52. 17.100 / 52. 17.100
>  libavcodec     54. 91.100 / 54. 91.100
>  libavformat    54. 61.104 / 54. 61.104
>  libavdevice    54.  3.102 / 54.  3.102
>  libavfilter     3. 34.101 /  3. 34.101
>  libswscale      2.  2.100 /  2.  2.100
>  libswresample   0. 17.102 /  0. 17.102
>  libpostproc    52.  2.100 / 52.  2.100
>=========
>
>
>


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