[FFmpeg-user] Regression: latest version drops frames when concatenating M2TS (to FFV1)

Francois Visagie francois.visagie at gmail.com
Mon Sep 14 20:13:03 CEST 2015


Concatenating from ffmpegclipfiles.txt:

ffconcat version 1.0

file 00000.MTS

file '00046 - Copy.MTS'

 

produces:

 

C:\Users\user\Documents\Working\vdcat>ffmpeg.new -y -f concat -safe 0 -i
ffmpegclipfiles.txt -c:v ffv1 -c:a pcm_f32le ffmpegclips.new.avi

ffmpeg version N-75275-gd13a2df Copyright (c) 2000-2015 the FFmpeg
developers

  built with gcc 4.9.3 (GCC)

  configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gnutls --enab

le-iconv --enable-libass --enable-libbluray --enable-libbs2b
--enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme
--enable-libgsm --enable-l

ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus
--enable-librtmp --en

able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora
--enable-libtwolame --enable-libvidstab --enable-libvo-aacenc
--enable-libvo-amrwbenc

--enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp
--enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid
--enable-lzma --ena

ble-decklink --enable-zlib

  libavutil      55.  2.100 / 55.  2.100

  libavcodec     57.  1.100 / 57.  1.100

  libavformat    57.  0.100 / 57.  0.100

  libavdevice    57.  0.100 / 57.  0.100

  libavfilter     6.  3.100 /  6.  3.100

  libswscale      4.  0.100 /  4.  0.100

  libswresample   2.  0.100 /  2.  0.100

  libpostproc    54.  0.100 / 54.  0.100

Input #0, concat, from 'ffmpegclipfiles.txt':

  Duration: N/A, start: 0.520000, bitrate: 256 kb/s

    Stream #0:0: Video: h264 (High) (HDPR / 0x52504448), yuv420p, 1920x1080
[SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 100 tbc

    Stream #0:1: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 256
kb/s

Output #0, avi, to 'ffmpegclips.new.avi':

  Metadata:

    ISFT            : Lavf57.0.100

    Stream #0:0: Video: ffv1 (FFV1 / 0x31564646), yuv420p, 1920x1080 [SAR
1:1 DAR 16:9], q=2-31, 200 kb/s, 50 fps, 50 tbn, 50 tbc

    Metadata:

      encoder         : Lavc57.1.100 ffv1

    Stream #0:1: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 48000 Hz, stereo,
flt, 3072 kb/s

    Metadata:

      encoder         : Lavc57.1.100 pcm_f32le

Stream mapping:

  Stream #0:0 -> #0:0 (h264 (native) -> ffv1 (native))

  Stream #0:1 -> #0:1 (ac3 (native) -> pcm_f32le (native))

Press [q] to stop, [?] for help

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875520,
current: 850759; changing to 875521. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875521,
current: 852295; changing to 875522. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875522,
current: 853831; changing to 875523. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875523,
current: 855367; changing to 875524. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875524,
current: 856903; changing to 875525. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875525,
current: 858439; changing to 875526. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875526,
current: 859975; changing to 875527. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875527,
current: 861511; changing to 875528. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875528,
current: 863047; changing to 875529. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875529,
current: 864583; changing to 875530. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875530,
current: 866119; changing to 875531. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875531,
current: 867655; changing to 875532. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875532,
current: 869191; changing to 875533. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875533,
current: 870727; changing to 875534. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875534,
current: 872263; changing to 875535. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875535,
current: 873799; changing to 875536. This may result in incorrect timestamps
in the

output file.

[avi @ 051364c0] Non-monotonous DTS in output stream 0:1; previous: 875536,
current: 875335; changing to 875537. This may result in incorrect timestamps
in the

output file.

Past duration 0.792763 too large

    Last message repeated 5 times

Past duration 0.792763 too large  578795kB time=00:00:18.55
bitrate=255521.2kbits/s dup=0 drop=25

    Last message repeated 10 times

Past duration 0.792763 too large  586483kB time=00:00:18.74
bitrate=256263.8kbits/s dup=0 drop=25

    Last message repeated 11 times

Past duration 0.792763 too large  594645kB time=00:00:18.94
bitrate=257195.9kbits/s dup=0 drop=25

    Last message repeated 9 times

Past duration 0.792763 too large  601568kB time=00:00:19.16
bitrate=257149.3kbits/s dup=0 drop=25

    Last message repeated 10 times

Past duration 0.792763 too large  609193kB time=00:00:19.38
bitrate=257400.0kbits/s dup=0 drop=25

    Last message repeated 10 times

Past duration 0.792763 too large  616660kB time=00:00:19.58
bitrate=258000.1kbits/s dup=0 drop=25

    Last message repeated 9 times

Past duration 0.792763 too large  623783kB time=00:00:19.80
bitrate=258028.3kbits/s dup=0 drop=25

    Last message repeated 11 times

Past duration 0.792763 too large  631837kB time=00:00:19.99
bitrate=258850.2kbits/s dup=0 drop=25

    Last message repeated 8 times

Past duration 0.792763 too large  638183kB time=00:00:20.25
bitrate=258145.2kbits/s dup=0 drop=25

    Last message repeated 11 times

Past duration 0.792763 too large  646583kB time=00:00:20.41
bitrate=259493.0kbits/s dup=0 drop=25

    Last message repeated 10 times

Past duration 0.792763 too large  654655kB time=00:00:20.66
bitrate=259478.2kbits/s dup=0 drop=25

    Last message repeated 8 times

Past duration 0.792763 too large  661039kB time=00:00:20.86
bitrate=259597.1kbits/s dup=0 drop=25

    Last message repeated 11 times

Past duration 0.792763 too large  669710kB time=00:00:21.05
bitrate=260603.4kbits/s dup=0 drop=25

    Last message repeated 9 times

Past duration 0.792763 too large  676963kB time=00:00:21.27
bitrate=260652.4kbits/s dup=0 drop=25

    Last message repeated 10 times

Past duration 0.792763 too large  684744kB time=00:00:21.46
bitrate=261290.7kbits/s dup=0 drop=25

    Last message repeated 9 times

Past duration 0.792763 too large  692197kB time=00:00:21.72
bitrate=261021.9kbits/s dup=0 drop=25

    Last message repeated 11 times

Past duration 0.792763 too large  700577kB time=00:00:21.91
bitrate=261867.4kbits/s dup=0 drop=25

    Last message repeated 10 times

Past duration 0.792763 too large  708703kB time=00:00:22.17
bitrate=261846.2kbits/s dup=0 drop=25

    Last message repeated 9 times

Past duration 0.792763 too large  715688kB time=00:00:22.36
bitrate=262156.9kbits/s dup=0 drop=25

    Last message repeated 10 times

Past duration 0.792763 too large  723751kB time=00:00:22.62
bitrate=262110.0kbits/s dup=0 drop=25

    Last message repeated 11 times

Past duration 0.792763 too large  732231kB time=00:00:22.81
bitrate=262949.2kbits/s dup=0 drop=25

    Last message repeated 9 times

Past duration 0.792763 too large  739574kB time=00:00:23.03
bitrate=263003.8kbits/s dup=0 drop=25

    Last message repeated 11 times

Past duration 0.792763 too large  748095kB time=00:00:23.22
bitrate=263834.9kbits/s dup=0 drop=25

    Last message repeated 10 times

Past duration 0.792763 too large  756037kB time=00:00:23.45
bitrate=264089.0kbits/s dup=0 drop=25

    Last message repeated 8 times

Past duration 0.792763 too large  762628kB time=00:00:23.67
bitrate=263871.0kbits/s dup=0 drop=25

    Last message repeated 9 times

Past duration 0.792763 too large  769615kB time=00:00:23.86
bitrate=264146.3kbits/s dup=0 drop=25

    Last message repeated 11 times

Past duration 0.792763 too large  778514kB time=00:00:24.09
bitrate=264716.6kbits/s dup=0 drop=25

    Last message repeated 10 times

Past duration 0.792763 too large  786104kB time=00:00:24.28
bitrate=265183.8kbits/s dup=0 drop=25

    Last message repeated 9 times

Past duration 0.792763 too large  793497kB time=00:00:24.47
bitrate=265578.1kbits/s dup=0 drop=25

    Last message repeated 2 times

frame= 1223 fps= 21 q=-0.0 Lsize=  795778kB time=00:00:24.47
bitrate=266341.5kbits/s dup=0 drop=25

video:786337kB audio:9384kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: 0.007214%

 

The errors start appearing as soon as the boundary between clips is reached.

Clip ordering does not change the behaviour; it recurs at the new clip
boundary.

Individually the clips encode fine.

Concatenating Lagarith-encoded AVI versions of the input clips works fine.

 

An older version of ffmpeg concatenates the same M2TS files as above to FFV1
without problems:

 

C:\Users\user\Documents\Working\vdcat>ffmpeg.old -y -f concat -safe 0 -i
ffmpegclipfiles.txt -c:v ffv1 -c:a pcm_f32le ffmpegclips.old.avi

ffmpeg version N-54277-gff130d7 Copyright (c) 2000-2013 the FFmpeg
developers

  built on Jun 30 2013 01:20:12 with gcc 4.7.3 (GCC)

  configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gnutls --enab

le-iconv --enable-libass --enable-libbluray --enable-libcaca
--enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug
--enable-libmp3lame --ena

ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
--enable-libsp

eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc
--enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264
--enable-libxavs --

enable-libxvid --enable-zlib

  libavutil      52. 37.101 / 52. 37.101

  libavcodec     55. 17.100 / 55. 17.100

  libavformat    55. 10.100 / 55. 10.100

  libavdevice    55.  2.100 / 55.  2.100

  libavfilter     3. 77.101 /  3. 77.101

  libswscale      2.  3.100 /  2.  3.100

  libswresample   0. 17.102 /  0. 17.102

  libpostproc    52.  3.100 / 52.  3.100

[concat @ 027a7a40] Estimating duration from bitrate, this may be inaccurate

Input #0, concat, from 'ffmpegclipfiles.txt':

  Duration: 00:00:00.04, start: 0.019967, bitrate: 12 kb/s

    Stream #0:0: Video: h264 (High) (HDPR / 0x52504448), yuv420p, 1920x1080
[SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 100 tbc

    Stream #0:1: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 256
kb/s

Output #0, avi, to 'ffmpegclips.old.avi':

  Metadata:

    ISFT            : Lavf55.10.100

    Stream #0:0: Video: ffv1 (FFV1 / 0x31564646), yuv420p, 1920x1080 [SAR
1:1 DAR 16:9], q=2-31, 200 kb/s, 50 tbn, 50 tbc

    Stream #0:1: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 48000 Hz, stereo,
flt, 3072 kb/s

Stream mapping:

  Stream #0:0 -> #0:0 (h264 -> ffv1)

  Stream #0:1 -> #0:1 (ac3 -> pcm_f32le)

Press [q] to stop, [?] for help

frame= 1248 fps= 12 q=-1.0 Lsize=  813483kB time=00:00:25.01
bitrate=266434.6kbits/s

video:804041kB audio:9384kB subtitle:0 global headers:0kB muxing overhead
0.007128%

 

Apart from absence of error messages, note the higher (and correct) frame
count.

 

I’d be happy to upload the two M2TS input clips if need be.

 

François Visagie

 

 

T: +27 (83) 326-4358

F: +27 (86) 542-2133

E: francois.visagie at gmail.com

 

 



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