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Hello
Almost all MPEG-TS (DVB-C recordings with Mythtv) to mkv conversions with mkvmerge have a wrong duration in the mkv file.
This happens also when I use --split.
What can I do to fix this?
Does it happen because of corrupt data in the beginning? Does skipping inside the file fix this (how is it done)?
Code:mkvmerge -o 10017_20120217195000.mkv 10017_20120217195000.mpgCode:General ID : 82 (0x52) Complete name : 10017_20120217195000.mpg Format : MPEG-TS File size : 3.67 GiB Duration : 34mn 39s Overall bit rate mode : Variable Overall bit rate : 15.2 Mbps Video ID : 60 (0x3C) Menu ID : 1 (0x1) Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4.0 Format settings, CABAC : Yes Format settings, ReFrames : 4 frames Codec ID : 27 Duration : 34mn 38s Bit rate : 14.0 Mbps Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate : 25.000 fps Standard : Component Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Interlaced Scan order : Top Field First Bits/(Pixel*Frame) : 0.271 Stream size : 3.40 GiB (92%) Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Audio ID : 64 (0x40) Menu ID : 1 (0x1) Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Format settings, Endianness : Big Codec ID : 129 Duration : 34mn 39s Bit rate mode : Constant Bit rate : 384 Kbps Channel(s) : 6 channels Channel positions : Front: L C R, Side: L R, LFE Sampling rate : 48.0 KHz Bit depth : 16 bits Compression mode : Lossy Delay relative to video : -728ms Stream size : 95.2 MiB (3%) Language : German Language, more info : Clean effectsCode:General Unique ID : 71472755369825805954965999584523238553 (0x35C526E7FEB1354E0A4E1784E176BC99) Complete name : 10017_20120217195000.mkv Format : Matroska Format version : Version 4 / Version 2 File size : 3.57 GiB Duration : 2h 33mn Overall bit rate : 3 335 Kbps Encoded date : UTC 2014-02-05 00:05:57 Writing application : mkvmerge v6.7.0 ('Back to the Ground') 64bit built on Jan 8 2014 15:19:56 Writing library : libebml v1.3.0 + libmatroska v1.4.1 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4.0 Format settings, CABAC : Yes Format settings, ReFrames : 4 frames Format settings, GOP : M=4, N=28 Codec ID : V_MPEG4/ISO/AVC Bit rate : 2 884 Kbps Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Variable Original frame rate : 25.000 fps Standard : Component Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Interlaced Scan order : Bottom Field First Default : Yes Forced : No Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Audio ID : 2 Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Format settings, Endianness : Big Codec ID : A_AC3 Duration : 2h 33mn Bit rate mode : Constant Bit rate : 384 Kbps Channel(s) : 6 channels Channel positions : Front: L C R, Side: L R, LFE Sampling rate : 48.0 KHz Bit depth : 16 bits Compression mode : Lossy Delay relative to video : -588ms Stream size : 422 MiB (12%) Language : German Default : Yes Forced : No
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- check your ts stream for errors and fixing them using Cypheros TS-Doctor or similar tools might helpWhat can I do to fix this?
- remuxing the ts to m2ts using tsMuxeR or ffmpeg and then feeding the output to mkvmerge might help
- report the problem to the mkvtoolnix bug tracker and ask Mosu (mkvtoolnix developer) to look at it -
Please provide a ts video sample.
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Also by cleaning them with TS-Doctor before I have conversions with wrong durations.
Here is a sample.
http://minerva11.mine.bz/public/winx/10017_20120217195000_5min.mpg -
I thought you had transport streams,... not program streams,...
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Given the video is interlaced..... I'd try remuxing while specifying a frame rate. If 25fps doesn't fix it, try 50i or 50p. If the video is playing correctly it could be something to do with the way the frame rate is being "interpreted".
If none of that works I'd try remuxing the ts file as a new ts file with tsmuxer, then remuxing the new ts file with MKVMergeGUI. -
Original:
Duration : 34mn 39s
Created mkv:
Duration : 2h 33mn
With tsMuxer, muxing a new m2ts (which is fine) and afterwards mkvmerge, the mkv has the wrong duration.
I noticed the following in the tsMuxeR log, can it be the source of the problem, it is audio?
Network Optix tsMuxeR. Version 2.6.12. www.networkoptix.com
Decoding AC3 stream (track 2): Bitrate: 384Kbps Sample Rate: 48KHz Channels: 5.1
Decoding H264 stream (track 1): Profile: High@4.0 Resolution: 1920:1080i Frame rate: 25
H.264 muxing fps is not set. Get fps from stream. Value: 25
H264 bitstream changed: insert pict timing and buffering period SEI units
B-pyramid level 1 detected. Shift DTS to 2 frames
B-pyramid level 2 detected. Shift DTS to 3 frames
AC3 stream (track 2): bad frame detected at position00:09:52,831. Resync stream.
Decoding AC3 stream (track 2): Bitrate: 384Kbps Sample Rate: 48KHz Channels: 5.1
AC3 stream (track 2): bad frame detected at position00:09:55,039. Resync stream.
Decoding AC3 stream (track 2): Bitrate: 384Kbps Sample Rate: 48KHz Channels: 5.1
Processed 51929 video frames
Flushing write buffer
Mux successful complete
Muxing time: 1 min 0 sec
I fixed the input file with TS-Doctor (tsMuxeR recognizes these) . Up to here the duration is still correct. The mkvmerge file created this way has also the wrong duration.
Any other ideas?Last edited by bruchmann; 5th Feb 2014 at 16:43.
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I checked the created mkv on the position where the resync stream happend due to AC3 bad frame with tsMuxeR, there is a video glitch. Also when skipping after this position the time jumps to 2 hours. This explains the problem.
As I also had the problem with TS-Doctor created files, are there any other options I have to fix the original TS file? -
Given the audio appears to be the problem, I'd try remuxing with MKVMergeGUI without the audio. If the video on it's own results in the correct duration then you've confirmed it's the audio. You might need to re-encode it.
Or maybe try giving Delaycut a look at it. Or even extracting the AC3 with HD-DVD/Blu-Ray Stream Extractor. If eac3to finds any problems when extracting, hopefully it'll fix them. -
The problem you have is you are converting your files to variable framerates,stick to constant frame rates.
I think,therefore i am a hamster. -
I have no problem remuxing your sample in mkv using mkvmerge 6.7.0 w/o timecodes. There is no wrong duration and the MKVs are playing fine in VLC, no matter if AVC is VFR or CFR.
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running the audio through delaycut (without any additional options) might help
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Originally Posted by Endoro
Sorry, I provided a wrong link, the complete movie you can find here:
http://minerva11.mine.bz/public/winx/10017_20120217195000.mpg -
He's just remuxing, not converting. Using MKVMergeGUI shouldn't be a problem when remuxing VFR video.Originally Posted by johns0
I know MediaInfo reports the frame rate as variable, but chances are it's not. Although MediaInfo only reports the frame rate as variable for the remuxed MKV, and doesn't specify variable or constant for the original TS file. -
please have a look at my workflow to deal with such TS files:
Muxing directly TS --> MKV with preserved time codes leads to a defective file with a wrong duration and seeking doesn't work (10017_20120217195000.mkv).Code:C:\Users\Endoro>timecodeanalysis 10017_20120217195000.mpg Time code analysis for "10017_20120217195000.mpg" Progress: 100% Track ID 0: video (MPEG-4p10/AVC/h.264) duration frames Sum(t) cSum(t) cSum(f) 20 ms 51919 1038380 ms 1038380 ms 51919 Track ID 1: audio (AC3/EAC3) duration frames Sum(t) cSum(t) cSum(f) 32 ms 64942 2078144 ms 2078144 ms 64942 C:\Users\Endoro>mkvmerge --output-charset utf-8 --ui-language en -o 10017_20120217195000.mkv 10017_20120217195000.mpg mkvmerge v6.7.0 ('Back to the Ground') 64bit built on Jan 8 2014 15:10:52 '10017_20120217195000.mpg': Using the demultiplexer for the format 'MPEG transport stream'. '10017_20120217195000.mpg' track 0: Using the output module for the format 'AVC/h.264 (unframed)'. '10017_20120217195000.mpg' track 1: Using the output module for the format 'AC3'. The file '10017_20120217195000.mkv' has been opened for writing. '10017_20120217195000.mpg' track 0: Extracted the aspect ratio information from the MPEG-4 layer 10 (AVC) video data and set the display dimensions to 1920/1080. Progress: 100% The cue entries (the index) are being written... Muxing took 47 seconds. C:\Users\Endoro>timecodeanalysis 10017_20120217195000.mkv Time code analysis for "10017_20120217195000.mkv" Progress: 100% Track ID 0: video (MPEG-4p10/AVC/h.264) duration frames Sum(t) cSum(t) cSum(f) 0 ms 1 0 ms 0 ms 1 20 ms 103886 2077720 ms 2077720 ms 103887 40 ms 1 40 ms 2077760 ms 103888 60 ms 6 360 ms 2078120 ms 103894 80 ms 1 80 ms 2078200 ms 103895 140 ms 1 140 ms 2078340 ms 103896 588 ms 1 588 ms 2078928 ms 103897 980 ms 1 980 ms 2079908 ms 103898 7128072 ms 1 7128072 ms 9207980 ms 103899 Track ID 1: audio (AC3/EAC3) duration frames Sum(t) cSum(t) cSum(f) 32 ms 64939 2078048 ms 2078048 ms 64939 1120 ms 1 1120 ms 2079168 ms 64940 1983668 ms 1 1983668 ms 4062836 ms 64941 5144416 ms 1 5144416 ms 9207252 ms 64942 C:\Users\Endoro>mkvextract --output-charset utf-8 --ui-language en tracks 10017_20120217195000.mkv 0:10017_20120217195000.264 1:10017_20120217195000.ac3 Extracting track 0 with the CodecID 'V_MPEG4/ISO/AVC' to the file '10017_20120217195000.264'. Container format: AVC/h.264 elementary stream Extracting track 1 with the CodecID 'A_AC3' to the file '10017_20120217195000.ac3'. Container format: Dolby Digital (AC3) Progress: 99% mtx ex: No error (type: N3mtx5mm_io13end_of_file_xE) Progress: 100% C:\Users\Endoro>mkvmerge --output-charset utf-8 --ui-language en -o 10017_20120217195000.Remux.mkv 10017_20120217195000.264 10017_20120217195000.ac3 mkvmerge v6.7.0 ('Back to the Ground') 64bit built on Jan 8 2014 15:10:52 '10017_20120217195000.264': Using the demultiplexer for the format 'AVC/h.264'. '10017_20120217195000.ac3': Using the demultiplexer for the format 'AC3'. '10017_20120217195000.264' track 0: Using the output module for the format 'AVC/h.264 (unframed)'. '10017_20120217195000.ac3' track 0: Using the output module for the format 'AC3'. The file '10017_20120217195000.Remux.mkv' has been opened for writing. '10017_20120217195000.264' track 0: Extracted the aspect ratio information from the MPEG-4 layer 10 (AVC) video data and set the display dimensions to 1920/1080. Progress: 100% The cue entries (the index) are being written... Muxing took 43 seconds. C:\Users\Endoro>timecodeanalysis 10017_20120217195000.Remux.mkv Time code analysis for "10017_20120217195000.Remux.mkv" Progress: 100% Track ID 0: video (MPEG-4p10/AVC/h.264) duration frames Sum(t) cSum(t) cSum(f) 20 ms 103899 2077980 ms 2077980 ms 103899 Track ID 1: audio (AC3/EAC3) duration frames Sum(t) cSum(t) cSum(f) 32 ms 64942 2078144 ms 2078144 ms 64942 C:\Users\Endoro>mediainfo 10017_20120217195000.*mkv General Unique ID : 214135067909871359475088890763684030342 (0xA118E9F82CD3921882BC5037D11F2786) Complete name : C:\Users\Endoro\10017_20120217195000.mkv Format : Matroska Format version : Version 4 / Version 2 File size : 3.57 GiB Duration : 2h 33mn Overall bit rate : 3 335 Kbps Encoded date : UTC 2014-02-07 15:01:13 Writing application : mkvmerge v6.7.0 ('Back to the Ground') 64bit built on Jan 8 2014 15:10:52 Writing library : libebml v1.3.0 + libmatroska v1.4.1 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4.0 Format settings, CABAC : Yes Format settings, ReFrames : 4 frames Format settings, GOP : M=4, N=28 Codec ID : V_MPEG4/ISO/AVC Bit rate : 2 884 Kbps Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Variable Original frame rate : 25.000 fps Standard : Component Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Interlaced Scan order : Bottom Field First Default : Yes Forced : No Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Audio ID : 2 Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Format settings, Endianness : Big Codec ID : A_AC3 Duration : 2h 33mn Bit rate mode : Constant Bit rate : 384 Kbps Channel count : 6 channels Channel positions : Front: L C R, Side: L R, LFE Sampling rate : 48.0 KHz Bit depth : 16 bits Compression mode : Lossy Delay relative to video : -588ms Stream size : 422 MiB (12%) Language : German Default : Yes Forced : No General Unique ID : 213039916239423932916369749962828881306 (0xA045FED2C3F4659A938BD357E5711D9A) Complete name : C:\Users\Endoro\10017_20120217195000.Remux.mkv Format : Matroska Format version : Version 4 / Version 2 File size : 3.57 GiB Duration : 34mn 38s Overall bit rate : 14.8 Mbps Encoded date : UTC 2014-02-07 15:10:17 Writing application : mkvmerge v6.7.0 ('Back to the Ground') 64bit built on Jan 8 2014 15:10:52 Writing library : libebml v1.3.0 + libmatroska v1.4.1 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4.0 Format settings, CABAC : Yes Format settings, ReFrames : 4 frames Format settings, GOP : M=4, N=28 Codec ID : V_MPEG4/ISO/AVC Duration : 34mn 38s Bit rate : 14.1 Mbps Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 25.000 fps Standard : Component Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Interlaced Scan order : Bottom Field First Bits/(Pixel*Frame) : 0.272 Stream size : 3.41 GiB (95%) Default : Yes Forced : No Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Audio ID : 2 Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Format settings, Endianness : Big Codec ID : A_AC3 Duration : 34mn 38s Bit rate mode : Constant Bit rate : 384 Kbps Channel count : 6 channels Channel positions : Front: L C R, Side: L R, LFE Sampling rate : 48.0 KHz Bit depth : 16 bits Compression mode : Lossy Stream size : 95.1 MiB (3%) Default : Yes Forced : No
Muxing without time codes is working here. The resulting MKV plays fine (except the short start sequence with a destroyed GOP), you get the right duration and seeking also works (10017_20120217195000.Remux.mkv).
Time code analysis may help in such cases. If you have a file with VFR, you can specifically change widely differing time codes. -
Where does timecodeanalysis come from? (never heard of it)
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"Analysis" is a simple evaluation of the frequency of frame durations. You can also calculate statistical deviations to remove or replace time codes behind the borders
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got a link to the tool?
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It's a simple Windows cmd shell 'Batch' script to count the frequencies and make some basic calculations. To get the time codes from ts/mpg I used ffprobe (very slow!) and for MKV mkvextract. My ffprobe script is not good enough for publishing
, but for MKV:
PS: the best tool for cli statistics is SPSS.Code:@ECHO OFF &SETLOCAL disableDelayedExpansion SET "TCodeFile=%random%.txt" IF "%~1"=="" ECHO(Missing mkv name.&EXIT /b 1 IF NOT EXIST "%~1" ECHO("%~1" not found.&EXIT /b 1 ECHO(Time code analysis for "%~1" FOR /f "tokens=1*delims=:" %%a IN ('mkvmerge -i "%~1"^|findstr /nir "Track ID"') DO ( FOR /f "tokens=3delims=: " %%c IN ("%%~b") DO ( SET "tID%%a=%%c" SET "dID%%c=%%b" CALL SET "ParmLine=%%ParmLine%% %%c:"%temp%\%%c%TCodeFile%"" ) ) mkvextract timecodes_v2 "%~1" %ParmLine:~1% || EXIT /b 1 FOR /f "tokens=1*delims==" %%a IN ('SET "tID"') DO CALL:processTrack "%%~b" FOR /f "tokens=1*delims==" %%a IN ('SET "tID"') DO DEL "%temp%\%%~b%TCodeFile%" GOTO:EOF :processTrack tID CALL ECHO(%%dID%~1%% IF NOT EXIST "%temp%\%~1%TCodeFile%" ECHO("%temp%\%~1%TCodeFile%" NOT found.&EXIT /b 1 AWK "{f2=f1;f1=$1;if (NR>2) a[f1-f2]++}; END {printf(\"%%10s %%10s %%13s %%14s %%11s\", \"duration\",\"frames\",\"Sum(t)\",\"cSum(t)\",\"cSum(f)\n\");for (i in a) {sumt=i*a[i];csumt+=i*a[i];csumf+=a[i];printf(\"%%7s ms %%10s %%10s ms %%11s ms %%10s\n\",i,a[i],sumt,csumt,csumf)}}" "%temp%\%~1%TCodeFile%" EXIT /b -
@endoro
I tried the workflow, but noticed a big sound shift from about 1 second.
Clear to hear at 03:30, where the Chinese man says: "...how (see his mouth open)...entjeedentjee (after, closes is mouth)", before the next scene shows.
I noticed big sound shifts also, when I used TsMuxer. -
The value of the original audio delay (-728 ms) is lost if you multiplex raw video/audio tracks. Just restore this delay to get a synchronous video.
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