Hi! First of all, thanks for developing the IVTV driver, I've been using it successfully for quite some time now (~two years maybe, mainly with Freevo).
Lately, I noticed problems with some TV recordings here in Germany (3SAT for example): The broadcast is supposed to have a special audio channel for blind people, and I am recording in stereo (default 0x00e9 mode IIRC), but the channels are not separated at all. I.e. I have a 2-channel, stereo, 48kHz recording, but I all mplayer parameters which are supposed to select just the left or right channel do not remove the voice describing the screenplay. Which is...kind of awkward. ;-) A possibly important fact is that I let Freevo start the recording several minutes before the start of the program, when I suppose that the broadcasting changes in some way. <wild_guess>So maybe the IVTV driver would have to change some stream/recording parameters and does not?</wild_guess> I really wonder why that would be necessary though, I thought there were just two channels, and these would end up as left/right in the stereo recording? BTW: The same has happend with the more common two-language broadcasted programs in the past. I put up an example part of the recording here (~10Mb): http://kogs-www.informatik.uni-hamburg.de/~meine/broken_audio.mpeg I tried things like "mplayer -af channels=2:2:0:1:0:0" (resp. 2:2:1:1:1:0) and "mplayer -stereo 1" (resp. 2). I have a WinTV PVR-350 (without radio receiver): 00:07.0 Multimedia video controller: Internext Compression Inc iTVC15 MPEG-2 Encoder (rev 01) Subsystem: Hauppauge computer works Inc. WinTV PVR-350 Flags: bus master, medium devsel, latency 64, IRQ 11 Memory at d8000000 (32-bit, prefetchable) [size=64M] Capabilities: [44] Power Management version 2 Here are my only ivtv-related Linux module.conf settings: alias char-major-61 lirc_i2c alias char-major-81 videodev alias char-major-81-0 ivtv options msp3400 once=1 # simple=1 My IVTV driver settings are set by Freevo: TV_IVTV_OPTIONS = { 'input' : 4, 'resolution' : '720x576', 'aspect' : 2, 'audio_bitmask' : 233, 'bframes' : 3, 'bitrate_mode' : 0, 'bitrate' : 8000000, 'bitrate_peak' : 12000000, 'dnr_mode' : 0, 'dnr_spatial' : 4, 'dnr_temporal' : 4, 'dnr_type' : 0, 'framerate' : 1, 'framespergop' : 15, 'gop_closure' : 1, 'pulldown' : 0, 'stream_type' : 14, } "ivtvctl -C" thus gives: ioctl IVTV_IOC_G_CODEC ok Codec parameters aspect : 2 audio : 0x00e9 bframes : 3 bitrate_mode: 0 bitrate : 8000000 bitrate_peak: 9600000 dnr_mode : 0 dnr_spatial : 0 dnr_temporal: 8 dnr_type : 0 framerate : 0 framespergop: 12 gop_closure : 1 pulldown : 0 stream_type : 14 I would be glad if someone could shed light on this. (Or tell me how to extract the right channel from the above URL, maybe I am just too stupid.. ;-) ) -- Ciao, / / .o. /--/ ..o / / ANS ooo
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