problem with ffmbc

[jack616]

Can anyone tell me if there is a way around the following issue? (or explain it)
I am trying to convert a MKV to TS and the following output occurs
(Many other conversions have worked fine with identical settings)


C:\ffmbc -i myDVD.mkv -vcodec copy -acodec copy -f mpegts myVid.ts
FFmbc version 0.7-rc8
Copyright (c) 2008-2013 Baptiste Coudurier and the FFmpeg developers
[matroska,webm @ 00000000018ce730] Unknown entry 0xA4
Input #0, matroska,webm, from 'myDVD.mkv':
Metadata:
title: MYDVD
Duration: 02:47:55.60, bitrate: 5376 kb/s
Stream #0.0(eng): Video: mpeg2video (Main), yuv420p, 720x576i tff [PAR 64:45 DAR 16:9], 7500 kb/s, 25.00 fps
Stream #0.1(eng): Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s (default)
Metadata:
title: 3/2+1
[mpegts @ 000000000377f540] muxrate VBR, pcr every 2 pkts, sdt every 200, pat/pmt every 40 pkts
Output #0, mpegts, to 'myVid.ts':
Metadata:
encoder: FFmbc 0.7
Stream #0.0(und): Video: mpeg2video, yuv420p, 720x576i tff [PAR 64:45 DAR 16:9], stream copy, 25.00 fps
Stream #0.1(und): Audio: ac3, 48000 Hz, 5.1, s16, stream copy (default)
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
Press [q] to stop, [?] for help
[mpegts @ 000000000377f540] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 3600 >= 0
av_interleaved_write_frame(): Invalid argument


Thanks
jack

[jack616]

ps. sorry - forgot to say - I'm running the windows7-64 version.

[poisondeathray]

Probably a problem with that specific MKV

(Many other conversions have worked fine with identical settings)

[matroska,webm @ 00000000018ce730] Unknown entry 0xA4

You could try remuxing it with mkvtoolnix first, then try again

[jack616]

Thanks - but the MKV was made with mkvtoolnix.

[El Heggunte]

Without more information, it's not possible to determine if the problem is in the source file, in the build of ffmbc you're using, or in both. For the record, mkvmerge still has some issues with MPEG-2 and MPEG-1 video, so it may create problematic MKVs even when the original streams aren't b0rked As for ffmbc, well, the FFMPEG source-code is well-known for its "historical" bugs / design flaws around "non-monotone timestamps"...

[jack616]

If you need more information let me know exactly what and I'll provide it.
The MKV plays back fine however I need to convert to .ts - doing so works fine with TSmuxer but
unfortunately audio is out of sync (see my previous thread relating to TSMuxer bug for details if you wish)
which is why I'm resorting to ffmbc

In the meantime I suspect this is the relevant issue in the ffmb response:
[mpegts @ 000000000377f540] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 3600 >= 0
which was the red line in the error message.

Perhaps someone can explain exactly what that means?

[poisondeathray]

Was the original a DVD ? Decrypted ? So did you used MKVToolnix on the VOB ?

You can try an updated build of ffmpeg (I doubt it will help) , as ffmbc hasn't been updated in a while

That mux error is actually very common - people see it all the time

[poisondeathray]

Also for tsmuxer, did you try 1.12.3a (the beta builds? ) , you only mentioned 1.10.6 in that other thread

[El Heggunte]

Besides, if you are sure there exists an MPEG-2 related bug in TSmuxer,
please don't be shy and get in touch with its author (Roman):

http://forum.doom9.org/showthread.php?t=168539&page=6

all
Please send me private messages If you find some bugs.

[jack616]

if [mpegts @ 000000000377f540] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 3600 >= 0
is seen all the time presumably someone knows what the message means?

The obvious things have been tried and of course the DVD is decrypted - I did say the MKV plays.

[poisondeathray]

I don't know what it means besides a bad mux. A simple search shows that it's very very common. In my experience it's one of the most common ffmpeg / ffmbc errors.

Some patches have been applied to ffmpeg that supposedly fix it in some scenarios, but if you tried a recent binary, still same error message, then consider submitting a sample and bug report

[jack616]

Does anyone know what the "dts" represents in the above error message?

[El Heggunte]

Decoding Time Stamps. So my guess is, ffmpeg and/or ffmbc misinterprets the Presentation Time Stamps as DTSs

[jack616]

Thanks El... It seems strange that something so widely reported cant be eliminated