On Wed, 2008-10-22 at 11:37 -0500, Carl Karsten wrote: > Getting back to my vga2usb project that I left off 6 months ago. I am > starting > with what is simple, and expecting to be told "build from current source" and > "those options don't make sense"
It may be the case (and it can be the case) but one way or another a segfault or anything else as serious as that is not acceptable, especially in beta or later releases. As always, please be patient if my feedback comes late and don't be afraid to remind to the list/bugtracker (berlios!)/me the still unsolved issues. > Does anyone (ping Christian) know how up to date that is? It is two releases old. No critical fixes committed in the meantime, anyway. So the segfault you're reporting is even less acceptable. > Where do I get trunk from these days, and is that the most cutting edge? The official repo is still (and will remain) CVS on cvs.exit1.org on berlios you can find: - mirror of official tarballs - special-purposes branches (I feel SVN MUCH more handy for that, even using a repository located on a different server). stop (= well, there is also the now-official bugtracker and the development blog, but the coding related stuff ends here :) > I don't need this to work until march, so I have some time to help debug > whatever > is active development. I hope the debug will take much less time :) > [26944.623816] Linux video capture interface: v2.00 > [26944.732571] Epiphan Systems VGA frame grabber driver version 3.19.2.0000 > loaded > [26944.733692] usbcore: registered new interface driver vga2usb > [27202.812026] usb 5-4: new high speed USB device using ehci_hcd and address 3 > [27202.944605] usb 5-4: configuration #1 chosen from 1 choice > [27202.979123] VGA2USB is now attached to vga2usb-192 > > Is there some way to figure out that vga2usb-192 is /dev/video0? (I need to > submit a report to vga2usb dev and tell him to log what /dev/videoX gets > used.) You can just use the driver name reported by transcode's import module. > [EMAIL PROTECTED]:~/vga2usb/v2u$ transcode -x v4l,null -V rgb24 -i > /dev/video0 -f 3 > -g 1600x1200 -y raw,null -z -r 2 -f 10 -o test.avi > transcode v1.1.0-beta1 (C) 2001-2003 Thomas Oestreich, 2003-2008 Transcode > Team > tcprobe: error while loading shared libraries: libmjpegutils-1.8.so.0: cannot > open shared object file: No such file or directory That is not good, please install mjpegutils > [transcode] V: auto-probing | /dev/video0 (FAILED) > [transcode] V: import format | (null) in (module=v4l) > [transcode] A: auto-probing | /dev/video0 (FAILED) > [transcode] A: import format | AC3 in (module=null) > [transcode] V: AV demux/sync | (1) sync AV at initial MPEG sequence > [transcode] V: import frame | 1600x1200 1.33:1 encoded @ UNKNOWN > [transcode] V: rescale frame | 800x600 1.33:1 (-r) > [transcode] V: flip frame | yes > [transcode] V: bits/pixel | 0.375 > [transcode] V: decoding fps,frc | 10.000,0 > [transcode] V: video format | RGB24 > [transcode] A: import format | 0x2000 AC3 [48000,16,2] > [transcode] A: export | disabled > [transcode] V: encoding fps,frc | 10.000,11 > [transcode] A: bytes per frame | 19200 (19200.000000) > [transcode] A: adjustment | [EMAIL PROTECTED] > [transcode] V: IA32/AMD64 accel | sse2 sse mmx cmove asm > [transcode] V: video buffer | 10 @ 1600x1200 [0x1] > [transcode] A: audio buffer | 10 @ 48000x2x16 > [import_null.so] v0.2.0 (2002-01-19) (video) null | (audio) null > [import_v4l.so] v0.0.6 (2006-05-08) (video) v4l | (audio) PCM > [export_null.so] v0.1.2 (2001-08-17) (video) null | (audio) null > [export_raw.so] v0.3.12 (2003-08-04) (video) * | (audio) MPEG/AC3/PCM > [import_v4l.so] warning: this module is deprecated: please use import_v4l2 > instead > [import_v4l.so] video4linux video grabbing > [import_v4l.so] device has no audio channel > [import_v4l.so] (audio-): > [import_v4l.so] picture: brightness= 0% hue= 0% colour= 0% contrast= 0% > [import_v4l.so] 1 frame buffer(s) available > [import_v4l.so] dropping -2147483623 video frames for AV sync > [export_raw.so] codec=RGB, fps=10.000, width=800, height=600 > Segmentation fault could you please report a backtrace? you'll need: - transcode compiled with debug symbols: it is the default when compiling from sources, binary packages usually don't have them - gdb - enabling core dump on your box (ulimit -c unlimited once before to run transcode and a writable working directory) - after the segfault, you'll find the core on your working directory (beware: it can be LARGE). - now you can follow the instructions here: http://www.transcoding.org/cgi-bin/transcode?Reporting_Crashes - after obtaining the backtrace, you can safely delete the core. > [import_v4l.so] picture: brightness=50% hue=50% colour=50% contrast= 6% > [import_v4l.so] critical: Cannot not set RGB picture attributes. ioctl > VIDIOCSPICT: Invalid argument > [import_v4l.so] critical: error grab init > [transcode] critical: video import module error: OPEN failed > [transcode] critical: failed to open input source I'll try to replicate (and solve it ASAP). > Does import_v4l2 work with version 1 api? No it doesn't. > Why failed to open input source? colorspace mismatch I guess. Or a bug in our code (or both :P). > [EMAIL PROTECTED]:~/vga2usb/v2u$ transcode -x v4l2,null -V rgb24 -i > /dev/video1 -f 3 > -g 1600x1200 -y raw,null -z -r 2 -f 10 -o test.avi > transcode v1.1.0-beta1 (C) 2001-2003 Thomas Oestreich, 2003-2008 Transcode > Team > tcprobe: error while loading shared libraries: libmjpegutils-1.8.so.0: cannot > open shared object file: No such file or directory > [transcode] V: auto-probing | /dev/video1 (FAILED) > [transcode] V: import format | (null) in (module=v4l2) > [transcode] A: auto-probing | /dev/video1 (FAILED) > [transcode] A: import format | AC3 in (module=null) > [transcode] V: AV demux/sync | (1) sync AV at initial MPEG sequence > [transcode] V: import frame | 1600x1200 1.33:1 encoded @ UNKNOWN > [transcode] V: rescale frame | 800x600 1.33:1 (-r) > [transcode] V: flip frame | yes > [transcode] V: bits/pixel | 0.375 > [transcode] V: decoding fps,frc | 10.000,0 > [transcode] V: video format | RGB24 > [transcode] A: import format | 0x2000 AC3 [48000,16,2] > [transcode] A: export | disabled > [transcode] V: encoding fps,frc | 10.000,11 > [transcode] A: bytes per frame | 19200 (19200.000000) > [transcode] A: adjustment | [EMAIL PROTECTED] > [transcode] V: IA32/AMD64 accel | sse2 sse mmx cmove asm > [transcode] V: video buffer | 10 @ 1600x1200 [0x1] > [transcode] A: audio buffer | 10 @ 48000x2x16 > [import_null.so] v0.2.0 (2002-01-19) (video) null | (audio) null > [import_v4l2.so] v1.4.2 (2008-08-04) (video) v4l2 | (audio) pcm > [export_null.so] v0.1.2 (2001-08-17) (video) null | (audio) null > [export_raw.so] v0.3.12 (2003-08-04) (video) * | (audio) MPEG/AC3/PCM > [import_v4l2.so] resync disabled > [import_v4l2.so] v4l2 video grabbing, driver = vivi, card = vivi > [import_v4l2.so] warning: bad pixel format conversion: RGB24 [packed] -> RGB > [packed] (no conversion > [import_v4l2.so] warning: bad pixel format conversion: BGR24 [packed] -> RGB > [packed] > [import_v4l2.so] warning: bad pixel format conversion: RGB32 [packed] -> RGB > [packed] > [import_v4l2.so] warning: bad pixel format conversion: BGR32 [packed] -> RGB > [packed] > [import_v4l2.so] warning: bad pixel format conversion: 8-bit grayscale -> RGB > [packed] > [import_v4l2.so] critical: no usable pixel format supported by card ditto Bests, -- Francesco Romani // Ikitt http://fromani.exit1.org ::: transcode homepage http://tcforge.berlios.de ::: transcode experimental forge
