Public bug reported: I was not able to record analog TV with the WinTV HVR-950Q with MythTV in Natty. The logs were not very helpful even with --setverbose all; the actual failure point is not logged.
In gdb, I narrowed the problem down to this: in NuppelVideoRecorder.cpp ( http://bazaar.launchpad.net/~ubuntu- branches/ubuntu/natty/mythtv/natty/view/head:/mythtv/libs/libmythtv/NuppelVideoRecorder.cpp ), StartVideoRecording was always failing at line 1076, because usingv4l2 is set and SetFormatV4L2 is a dummy function that always returns false. This is apparently because of the ifdefs related to V4L/V4L2. I reworked the ifdefs a bit, mimicking what I saw for other V4L stuff, so that the SetFormatV4L2 and DoV4L2 functions were defined correctly. I left DoV4L and DoMJPEG hollowed out since they don't compile and I don't care about 'em. After that, I was able to record analog through V4L in MythTV. Here are the main parameters I set in MythTV, just in case they aren't all obvious: In mythtv-setup: Video device: /dev/video0 Audio device: ALSA:hw:CARD=HVR950Q,DEV=0 Force audio sampling rate: 48000 In mythfrontend, software encoders: Width: 720 Height: 480 Video codec: MPEG4 Audio codec: MP3 Sampling rate: 48000 Here's the patch from the original source to my modified version: 1141c1141 < #if defined(USING_V4L) || defined(USING_V4L2) --- > #ifdef USING_V4L 1144d1143 < #ifdef USING_V4L 1327d1325 < #endif 1731d1728 < #ifdef USING_V4L 1864d1860 < #endif 1867c1863 < #else // USING_V4L || USING_V4L2 --- > #else // USING_V4L 1872c1868 < #endif // USING_V4L || USING_V4L2 --- > #endif // USING_V4L ** Affects: mythtv (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/790099 Title: Can't record analog TV with WinTV HVR-950Q -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
