"pullup" results in fast-forward effects with mkv files.

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On 06/12/2010 03:42 AM, Zane Tu wrote:
> 
> 
> On 06/12/2010 03:33 AM, Zane Tu wrote:
>> Hi there,
>>
>> I just compiled the latest version (r31370) from SVN and found that
>> using "vf=pullup" in the config file will cause the video tracks in all
>> my mkv files to play much faster than usual. (The audio tracks are
>> playing at a nomral rate, though.) The same thing happens to mp4 and mov
>> files, but that can be solved by using "demuxer=mov". As for mkv files,
>> I tried using "demuxer=mkv" but in vain.
>>
>> Without "vf=pullup", mkv files play just fine, regardless of whether
>> "demuxer=mkv" is present or not.
>>
>> The following is the output of mplayer when it plays an mkv file.
>>
>>
>> MPlayer SVN-r31370-4.4.1 (C) 2000-2010 MPlayer Team
>> mplayer: could not connect to socket
>> mplayer: No such file or directory
>> Failed to open LIRC support. You will not be able to use your remote
>> control.
>> Loading extension-related profile 'extension.mkv'
>>
>>
>> Playing ../fast.mkv.
>> [mkv] Track ID 1: video (V_MPEG4/ISO/AVC), -vid 0
>> [mkv] Track ID 2: audio (A_AAC), -aid 0, -alang und
>> [mkv] Will play video track 1.
>> Matroska file format detected.
>> VIDEO:  [avc1]  1280x720  24bpp  23.976 fps    0.0 kbps ( 0.0 kbyte/s)
>> [ass] auto-open
>> Opening video filter: [pullup]
>> [ass] Init
>> [ass] Updating font cache
>> ==========================================================================
>> Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
>> Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
>> ==========================================================================
>> ==========================================================================
>> Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
>> FAAD: compressed input bitrate missing, assuming 128kbit/s!
>> AUDIO: 48000 Hz, 2 ch, s16le, 128.0 kbit/8.33% (ratio: 16000->192000)
>> Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio))
>> ==========================================================================
>> AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
>> Starting playback...
>> Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
>> VO: [xv] 1280x720 => 1280x720 Planar YV12
>> pts after filters MISSING.027 ct:  0.000   0/  0 ??% ??% ??,?% 0 0
>> pts after filters MISSING.014 ct: -0.011   0/  0 ??% ??% ??,?% 1 0
>> pts after filters MISSING.006 ct: -0.022   0/  0 ??% ??% ??,?% 1 0
>> pts after filters MISSING.019 ct: -0.033   0/  0 ??% ??% ??,?% 2 0
>> pts after filters MISSING.030 ct: -0.043   0/  0 ??% ??% ??,?% 2 0
>> pts after filters MISSING.042 ct: -0.051   0/  0 ??% ??% ??,?% 3 0
>> pts after filters MISSING.033 ct: -0.061   0/  0 ??% ??% ??,?% 3 0
>> pts after filters MISSING.047 ct: -0.070   0/  0 ??% ??% ??,?% 4 0
>> pts after filters MISSING.062 ct: -0.078   0/  0 ??% ??% ??,?% 4 0
>> pts after filters MISSING.054 ct: -0.087   0/  0 ??% ??% ??,?% 5 0
>> pts after filters MISSING.071 ct: -0.096   0/  0 ??% ??% ??,?% 5 0
>> pts after filters MISSING.085 ct: -0.103   0/  0 ??% ??% ??,?% 6 0
>> pts after filters MISSING.076 ct: -0.112   0/  0 ??% ??% ??,?% 7 0
>> pts after filters MISSING.091 ct: -0.120   0/  0 ??% ??% ??,?% 7 0
>> pts after filters MISSING.105 ct: -0.127   0/  0 ??% ??% ??,?% 8 0
>>
>>
>> Thanks,
>> Zane
>>
> 
> 
> I searched online and discovered that the problem has been there for
> quite a while. (See the following link.)
> http://ubuntuforums.org/showpost.php?p=8315732&postcount=2
> 
> Any idea?
> 
> 
> Thanks,
> Zane
> 

Adding "nocorrect-pts=yes" solves the problem with mkv files. Thanks, Steve.
I wonder if this solution should be added to the documentation.

Regards,
Zane

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