Re: Problem playing recorded MJPEG with high resolution
David R Robison <[email protected]> Thu, 02 Feb 2012 15:02:09 -0500
| Newsgroups | gmane.comp.multimedia.matroska.user |
|---|---|
| Message-ID | <[email protected]> |
My bad. We use two different MJPEG cameras. This camera was recorded at 1600x1200 resolution. However, it still does not explain why I cannot replay it. Any ideas? David On 1/29/2012 12:32 PM, Steve Lhomme wrote: > > You should report the bug to vlc. They are about to make a big release > and will surely fix it > > On Jan 29, 2012 6:30 PM, "Ivan Kowalenko" <[email protected] > <mailto:[email protected]>> wrote: > > I'm not sure most graphics cards are designed for accelerating > MJPEG decoding, since mostly what I've seen is focused on H.264 > decoding (to assist with commercially distributed HD material, > such as iTunes purchases and BluRay playback). > > I can confirm that VLC will immediately crash upon opening the > file in version 1.1.12 in Mac OS X 10.6.8 (32-bit mode). I also > ran a test with mplayer to see if I could get some more detailed > information, and as luck would have it, it did! > > Ayanami:Downloads kichigai$ mplayer Cam564-20120124-124827.mkv > MPlayer SVN-r32528-4.2.1 (C) 2000-2010 MPlayer Team > Can't init Apple Remote. > > Playing Cam564-20120124-124827.mkv. > libavformat file format detected. > [matroska,webm @ 0x10180ee00] Unknown entry 0xFF > [matroska,webm @ 0x10180ee00] Unknown entry 0x656E > [matroska,webm @ 0x10180ee00] Unknown entry 0x4273 > [matroska,webm @ 0x10180ee00] Unknown entry 0x67AD > [matroska,webm @ 0x10180ee00] Read error at pos. 1550586 > (0x17a8fa) > [matroska,webm @ 0x10180ee00] Invalid stream 1 or size 3 > [matroska,webm @ 0x10180ee00] Estimating duration from > bitrate, this may be inaccurate > [lavf] stream 0: video (mjpeg), -vid 0, video > VIDEO: [MJPG] 1600x1200 0bpp 10.000 fps 0.0 kbps ( 0.0 > kbyte/s) > ========================================================================== > Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family > [mjpeg @ 0x100a1b740]mjpeg: using external huffman table > Selected video codec: [ffmjpeg] vfm: ffmpeg (FFmpeg MJPEG) > ========================================================================== > Audio: no sound > Starting playback... > Could not find matching colorspace - retrying with -vf scale... > Opening video filter: [scale] > Movie-Aspect is 1.33:1 - prescaling to correct movie aspect. > [swscaler @ 0x100a23920]using unscaled yuv422p -> yuyv422 > special converter > VO: [corevideo] 1600x1200 => 1600x1200 Packed YUY2 > [ASPECT] Warning: No suitable new res found! > V: 0.0 0/ 0 ??% ??% ??,?% 0 0 > [matroska,webm @ 0x100a18e60]Read error at pos. 1550587 (0x17a8fb) > V: 0.0 0/ 0 ??% ??% ??,?% 0 0 > > > Exiting... (End of file) > Ayanami:Downloads kichigai$ > > Notice how to says it's attempting to decode the video at a > resolution of 1600×1200. I suspect that this is where your problem > lies, and that somewhere between your source video and mkvmerge is > a mismatch in detected resolutions. Indeed, this is what mkvinfo > had to say: > > + EBML head > |+ Doc type: matroska > |+ Doc type version: 2 > |+ Doc type read version: 2 > + Segment, size 10146941 > |+ Seek head (subentries will be skipped) > |+ Segment information > | + Timecode scale: 1000000 > | + Duration: 7.230s (00:00:07.230) > | + Date: Tue Jan 24 18:48:34 2012 UTC > | + Muxing application: dsj_MKVSink (dsj 0_8_64) > | + Writing application: dsj_MKVSink (dsj 0_8_64) > |+ Segment tracks > | + A track > | + Track number: 1 > | + Track type: video > | + Track UID: 1185106944 > | + Default duration: 100.000ms (10.000 fps for a video track) > | + Video track > | + Pixel width: 1600 > | + Pixel height: 1200 > | + Frame rate: 10 > | + Codec ID: V_MS/VFW/FOURCC > | + CodecPrivate, length 46 (FourCC: MJPG, 0x47504a4d) > | + Name: video > |+ Cluster > > Try specifying the video resolution in your mkvmerge command and > see if that fixes the problem. --display-dimensions might fix the > problem, but no promises if it's interpreting the video data to be > encoded at the wrong resolution. I would also check your source > file's container. Perhaps you can tweak that to pass the right > information. > > ---------------------------------------------------- > Ivan Kowalenko > w: http://ivankowalenko.com <http://ivankowalenko.com/> > e: [email protected] <mailto:[email protected]> > > > > > On Wed, Jan 25, 2012 at 1:05 PM, David R Robison > <[email protected] > <mailto:[email protected]>> wrote: > > We have a nVidia graphics card. I'm sure our hardware is > sufficient as we do a lot of software video decoding. vlc > Plays the first frame then crashes. David > > > On 1/25/2012 2:01 PM, Ivan Kowalenko wrote: >> >> Try VLC. It may behave a little better. What are you running >> for hardware? It could just be overwhelming. >> >> ---------------------------------------------------- >> Ivan Kowalenko >> w: http://ivankowalenko.com >> e: [email protected] <mailto:[email protected]> >> p: 856-270-6049 <tel:856-270-6049> >> >> On Jan 25, 2012 11:04 AM, "David R Robison" >> <[email protected] >> <mailto:[email protected]>> wrote: >> >> >> _______________________________________________ >> Matroska-users mailing list >> [email protected] <mailto:[email protected]> >> http://lists.matroska.org/cgi-bin/mailman/listinfo/matroska-users >> Read Matroska-Users on GMane:http://dir.gmane.org/gmane.comp.multimedia.matroska.user > > -- > > David R Robison > Open Roads Consulting, Inc. > 103 Watson Road, Chesapeake, VA 23320 > phone:(757) 546-3401 <tel:%28757%29%20546-3401> > e-mail:[email protected] <mailto:[email protected]> > web:http://openroadsconsulting.com > blog:http://therobe.blogspot.com > book:http://www.xulonpress.com/bookstore/bookdetail.php?PB_ISBN=9781597816526 > > > > ------------------------------------------------------------------------ > This email communication (including any attachments) may contain confidential and/or privileged material intended solely for the individual or entity to which it is addressed. > If you are not the intended recipient, please delete this email immediately. > > _______________________________________________ > Matroska-users mailing list > [email protected] > <mailto:[email protected]> > http://lists.matroska.org/cgi-bin/mailman/listinfo/matroska-users > Read Matroska-Users on GMane: > http://dir.gmane.org/gmane.comp.multimedia.matroska.user > > > > _______________________________________________ > Matroska-users mailing list > [email protected] > <mailto:[email protected]> > http://lists.matroska.org/cgi-bin/mailman/listinfo/matroska-users > Read Matroska-Users on GMane: > http://dir.gmane.org/gmane.comp.multimedia.matroska.user > > > > _______________________________________________ > Matroska-users mailing list > [email protected] > http://lists.matroska.org/cgi-bin/mailman/listinfo/matroska-users > Read Matroska-Users on GMane: http://dir.gmane.org/gmane.comp.multimedia.matroska.user -- David R Robison Open Roads Consulting, Inc. 103 Watson Road, Chesapeake, VA 23320 phone: (757) 546-3401 e-mail: [email protected] web: http://openroadsconsulting.com blog: http://therobe.blogspot.com book: http://www.xulonpress.com/bookstore/bookdetail.php?PB_ISBN=9781597816526 This email communication (including any attachments) may contain confidential and/or privileged material intended solely for the individual or entity to which it is addressed. If you are not the intended recipient, please delete this email immediately. _______________________________________________ Matroska-users mailing list [email protected] http://lists.matroska.org/cgi-bin/mailman/listinfo/matroska-users Read Matroska-Users on GMane: http://dir.gmane.org/gmane.comp.multimedia.matroska.user