The VideoLAN Forums

Hi everybody,

Does somebody know a way to comine a video input from DShow and an audio input from a RTP stream (mp4a) to a single network stream? I've tried with the MRU dshow:// (video device set to my video source and audio set to none) and the option input-slave (:input-slave=rtp://10.0.3.109:5555) for the audio stream but I only get a network stream containing the video but no audio.

Any help would be much appreciated.

VLC would not be able to synchronize the two streams, since they intrinsically use different reference clocks.

I don't see how this could possibly work, sorry.

Thx for the quick answer. Seems like I've to find a different solution.

Perhaps using VLC to transcode my DShow video source to a network stream and then combine it with the audio stream would work? I know that this will for sure kill the sync between audio and video but to be honest: The timing is already out of sync when I'm accessing the two sources so it doesn't make a big difference if it even gets a little bit more out of sync as it already is. Could such a solution be made with a single player instance or do I have to create a chain of player to achive this goal?

Perhaps somebody can think of a different and/or even better solution than this one?

If you are using C++, I suggest you to look into the source code of live555. Especially how it deals with two streams together demuxed from a MKV file. As live555 is under lgpl, I think u could just grab the code you want. I have done similar things before in live555 even without VLC.

I've now used VLM to playback both streams (DShow and UDP) and combine them with the bridge framework (:bridge-in and :bridge-out). Works perfectly fine and by using the caching parameters for the playbacks, the sync can also be restored pretty easiely.