Re: Problem playing recorded MJPEG with high resolution
Steve Lhomme <[email protected]> Sat, 04 Feb 2012 12:23:32 +0100
| Newsgroups | gmane.comp.multimedia.matroska.user |
|---|---|
| Message-ID | <[email protected]> |
Le 02/02/2012 21:02, David R Robison a écrit : > 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 No idea, it doesn't look like a container problem though. > 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 _______________________________________________ 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