problem in Capturing mkv file using Graphedit

[Aamir1033]

Hi
greetings
i have two video capturing devices. i have to record the videos in mkv format simultaneously. i am using directshow and graph edit.
i used crossbar-->captur---> Matroskamuxer---> file writter for both channels, but i did not connected the audio output of capture device to the muxer. My video were recroding perfectly in mkv format. But when i connected an audio input to one of my channel, the video of that channel started missing frames at rendom intervals. on the otherhand that video channel that is not connected to audio remains perfect. Let me tell you that i am wrtting my video files on compact flash. i dont have any solution till now. completly stuck up.

I am usiing MPEG4 compression

i know that there is some interleaving mode if i use avi muxer. is there any such for matroska.

help me out if possible

regards
Aamir Akbar

[Baldrick]

Moving you to our capturing section updated your thread title.

No, I have no idea. I don't do any capturing in graphedit.

[El Heggunte]

......

My video were recroding perfectly in mkv format. But when i connected an audio input to one of my channel, the video of that channel started missing frames at rendom intervals. on the otherhand that video channel that is not connected to audio remains perfect. ---

--- I am usiing MPEG4 compression

.......

Maybe your computer is too slow (your user profile has no info about that), and/or you're not recording/saving onto a secondary hard-disk drive. FWIW, capturing works "best" when you use uncompressed audio and fast lossless compression for the video part --- you can re-encode and re-mux later.

P.S.: Graphedit sucks, use Graphstudio instead.

[Aamir1033]

thanx for your reply.
well sir i am using 500 Mhz embedded system, as it is my limitation.
i am using compact flash udma6 16gb as my secondry drive to store and record capture files.
please tell me what do you mean by uncompressed audio.

actually i am using graphedit just to have a visual idea, after that i write the vc++ code of that graph for my machine. i am directshow sdk to write my code.

[sanlyn]

What source are you capturing? If it's tape to lossy compression, there are worse ways to capture analog, but you'll have to be creative to find faster and more effective ways of damaging video. I'm with ElGeggunte, as most people who want a clean capture and a clean mkv result would capture to fast lossless compression (huffyuv or Lagarith and uncompressed PCM audio. Then encode and convert audio later.

A 16GB stick? Come think of it, that is getting creative. It might seem convenient to do it that way, but cleaning up the work and the problems would be exhausting and time consuming. You might want to consult a good capture guide, none of which would recommend a flash drive. Meanwhile you don't list your computer specs in your profile and we have no idea of your source video. Not much more that anyone could advise.