Benjamin Zores wrote: > Hi guys, > > I'm pretty new to this list so excuse me if questions have already been asked > for. > I'm an MPlayer developer and I recently did a few work to support ivtv cards > under our player. > > First thing was a new pvr:// input that should be able to use V4L2/IVTV > ioctl() > to read from ivtv cards with no more needs to ivtvctl (at least for most > common options). > > Anyhow, i'm currently working on a video output driver. > I based my work on the old patch for MPlayer 1.0pre7 that was in misc/ from > your SVN. > It's now nearly integrated but i still have a few issues. > > 1. Does ivtv cards have audio output or just video (tv-out) ? >
Yes, it has audio output. I use this to play back recorded mpeg-streams directly to my tv through a player built in to myth tv. In order to play other videos, I can use mplayer, which displays on an X-server that runs on the framebuffer of the pvr-card. Unfortunately there is no way to get audio this way. Thanks to your work, this problem would now be solved. Unfortunately I cannot answer your remaining questions. > Currently i'm sending MPEG-PES video data to the card but i wanted to know if > i can do the same > for MPEG-PES audio data. > > 2. I do have a problem with decoder filling. > > It seems from my tests that the decode needs something like 80 MPEG frames > before being > able to display a single picture. As a result, MPlayer renders a stream with > desyncronized A-V. >>From MPlayer view, audio and video packets are synced but the problem is >>that audio packets are played immediately when decoded while video packets >>are displayed with a 80 frames delay. > > Is there then a way for ivtv decoder to start displaying received frames > immediately ? > Otherwise, is there any way to known the exact moment where buffer gets filled > (and so, the exact time where pictures will be displayed) in order to delay > audio packets > from the same amount of time. > > 3. Is there some place where all of the IVTV ioctl() are described ? > (something more than just ivtv.h) > > Ben > -- Wilfried Philips Ghent University - TELIN (Telecommunications and Information Processing) http://telin.UGent.be/~philips -- _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel
