ffmpeg "pts < dts" error

**Decoyd** · 06-02-2011, 04:52 PM

I've been having problems transcoding mkv files to play on a sony bdp-s570 bluray player. When I look at my log file, I get:

Code:

1 - May 22 14:07:05.801 - TRANS> Input file: E:\Videos\30 Rock\Season 1\30 Rock S01E01 Pilot h264.mkv

   2 - May 22 14:07:05.802 -      > Transcoder: Executing: C:\Program Files\ffmpeg\bin\ffmpeg.exe -i "E:\Videos\30ROCK~1\SEASON~1\30A828~1.MKV" -y -vcodec copy -vf "scale=1280:720"  -acodec copy -sn  -f mpegts  -threads 4 -pix_fmt yuv420p -copyinkf -coder 1 -flags +loop -fflags +genpts -cmp +chroma -me_method hex -subq 7 -me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -b_strategy 1 -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -directpred 1 -flags2 +fastpskip+bpyramid+mixed_refs-dct8x8+wpred+aud+ivlc+mbtree -partitions -parti8x8-parti4x4-partp8x8-partp4x4-partb8x8 -crf 22 -bf 1 -refs 2 -bidir_refine 1 -deblockalpha 0 -deblockbeta 0 -vbsf h264_mp4toannexb  "D:\Mezzmo Transcode\E216B4C7-3D2A-4ed7-BDC1-C72050BBC3CA\Video\1391-mpegts_transcoding-libx264-ac3.mzt" 

   3 - May 22 14:07:05.802 -      > Ffmpeg --------------------------------------------------------------------

   4 - May 22 14:07:05.804 -      > Looks like transcoding started ok, let's wait for the actual file a bit...

   5 - May 22 14:07:05.804 -      > Waiting for transcoding to appear on disk...

   6 - May 22 14:07:05.837 - ffmpeg version git-N-30011-gb4bcd1e, Copyright (c) 2000-2011 the FFmpeg developers

  built on May 18 2011 04:49:49 with gcc 4.5.3

  configuration: --enable-gpl --enable-version3 --enable-memalign-hack --enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib --pkg-config=pkg-config

  libavutil    51.  2. 1 / 51.  2. 1

  libavcodec   53.  6. 0 / 53.  6. 0

  libavformat  53.  1. 0 / 53.  1. 0

  libavdevice  53.  0. 0 / 53.  0. 0

  libavfilter   2.  5. 0 /  2.  5. 0

  libswscale    0. 14. 0 /  0. 14. 0

  libpostproc  51.  2. 0 / 51.  2. 0

[matroska,webm @ 00000000018BC000] Estimating duration from bitrate, this may be inaccurate

Input #0, matroska,webm, from 'E:\Videos\30ROCK~1\SEASON~1\30A828~1.MKV':

  Duration: 00:22:02.36, start: 0.000000, bitrate: 384 kb/s

    Stream #0.0(eng): Video: h264 (High), yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)

    Stream #0.1(eng): Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s

[mpegts @ 00000000029F00C0] muxrate VBR, pcr every 2 pkts, sdt every 200, pat/pmt every 40 pkts

Output #0, mpegts, to 'D:\Mezzmo Transcode\E216B4C7-3D2A-4ed7-BDC1-C72050BBC3CA\Video\1391-mpegts_transcoding-libx264-ac3.mzt':

  Metadata:

    encoder         : Lavf53.1.0

    Stream #0.0(eng): Video: libx264, yuv420p, 1280x720 [PAR 1:1 DAR 16:9], q=2-31, 90k tbn, 23.98 tbc (default)

    Stream #0.1(eng): Audio: ac3, 48000 Hz, 5.1, 384 kb/s

Stream mapping:

  Stream #0.0 -> #0.0

  Stream #0.1 -> #0.1

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

[mpegts @ 00000000029F00C0] pts < dts in stream 0

av_interleaved_write_frame(): Invalid argument

   8 - May 22 14:07:05.837 - 

<MEZZMO>: Child process ended

   9 - May 22 14:07:06.004 -      > Transcoded file is ok, size is 7520 bytes

  10 - May 22 14:07:06.119 -      > Transcoder: GetAudioVideoFileName: D:\Mezzmo Transcode\E216B4C7-3D2A-4ed7-BDC1-C72050BBC3CA\Video\1391-mpegts_transcoding-libx264-ac3.mzt ALREADY EXISTS!

  11 - May 22 14:07:06.430 -      > Transcoder: GetAudioVideoFileName: D:\Mezzmo Transcode\E216B4C7-3D2A-4ed7-BDC1-C72050BBC3CA\Video\1391-mpegts_transcoding-libx264-ac3.mzt ALREADY EXISTS!

  12 - May 22 14:07:06.439 -      > Transcoder: GetAudioVideoFileName: D:\Mezzmo Transcode\E216B4C7-3D2A-4ed7-BDC1-C72050BBC3CA\Video\1391-mpegts_transcoding-libx264-ac3.mzt ALREADY EXISTS!

  13 - May 22 14:07:06.550 -      > Transcoder: GetAudioVideoFileName: D:\Mezzmo Transcode\E216B4C7-3D2A-4ed7-BDC1-C72050BBC3CA\Video\1391-mpegts_transcoding-libx264-ac3.mzt ALREADY EXISTS!

  14 - May 22 14:07:06.867 -      > Transcoder: GetAudioVideoFileName: D:\Mezzmo Transcode\E216B4C7-3D2A-4ed7-BDC1-C72050BBC3CA\Video\1391-mpegts_transcoding-libx264-ac3.mzt ALREADY EXISTS!

I've done a bunch of reading, and it seems that ffmpeg has trouble with certain streams, particularly ones using B-frames, that don't keep the frames in order (so the decode and presentation time stamps are different). In my case, if I use the "-vcodec libx264" instead of "-vcodec copy" on the command line, ffmpeg can handle the video properly. Is there any way to alter the profile (SonyBDP-NTSC or SonyBDP-NTSC-NoDivX) so that it will do this?

**Paul** · 06-02-2011, 04:56 PM

Yes, you could specify forcecodec="1" in the <format> like this (in relevant <avcontainer>):

Code:

<format id="h264" encode="1" codec="libx264" preferredtranscoded="1" forcecodec="1">

That'll stop remuxing ("copy") and will always transcode it fully.

On a side note, would it be possible for you to send that file to us here for testing with our internal builds of FFmpeg (via www.megaupload.com or any other similar site)?