Dear list members, since some days, I'm trying to get DVD playing to work with the Linux VDR (VDR plugins pvrinput + pvr350 + dvd) and the PVR350 TV card (TV out)/ivtv.
After some research, it seems that the PES stream delivered to the /dev/video16 MPEG decoder contains uncompressed dvdpcm audio (the dvd plugin already decompresses AC3 to PCM). However, audio output doesn't work currently (I only hear some clicking and fizzling). This is the output of "mplayer -identify" for the stream I want to be played back: > mplayer -identify dvd-only.mpg [...] ID_VIDEO_ID=0 ID_AUDIO_ID=160 MPEG-PES file format detected. VIDEO: MPEG2 720x576 (aspect 2) 25.000 fps 8000.0 kbps (1000.0 kbyte/s) ========================================================================== Opening audio decoder: [dvdpcm] Uncompressed DVD/VOB LPCM audio decoder AUDIO: 48000 Hz, 2 ch, s16be, 1536.0 kbit/100.00% (ratio: 192000->192000) Selected audio codec: [dvdpcm] afm:dvdpcm (Uncompressed DVD/VOB LPCM) ========================================================================== ID_FILENAME=dvd-only.mpg ID_VIDEO_FORMAT=0x10000002 ID_VIDEO_BITRATE=8000000 ID_VIDEO_WIDTH=720 ID_VIDEO_HEIGHT=576 ID_VIDEO_FPS=25.000 ID_VIDEO_ASPECT=1.3333 ID_AUDIO_CODEC=dvdpcm ID_AUDIO_FORMAT=65537 ID_AUDIO_BITRATE=1536000 ID_AUDIO_RATE=48000 ID_AUDIO_NCH=2 ID_LENGTH=80 ========================================================================== Now I would be interested in a detailled description of what exactly the PVR350 (or ivtv?) accepts on /dev/video16. Unfortunately, I don't know enough about MPEG to understand if the thingie I have here qualifies a "correct" MPEG2 stream or not, but mplayer as well as DVB cards seem to be able to play this stream. I wonder if it will be necessary to re-encode the audio part to mp3 to get it played back by the PVR350 or if there is any possibility to get PCM to work somehow and it's "just" a matter of fixing some header information, some part of the driver or configuring something in the right way? Any pointer to more detailled information would be greatly appreciated. If someone is interested, I also uploaded a short sample of the stream I want to be played to my homepage (5 MB). You can find it as http://www.hillier.de/linux/dvd-short.mpg. You should see one yellow sign with some parental advisory followed by a blue sign with the warning that any copying of this video is prohibited ;). There should be some noise accompanying the switch between both signs and only silence for the rest. mplayer-1.0pre7 plays it happily here. -- Ciao, Gernot _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
