[FFmpeg-user] Capture Video from Decklink Video Render

[Yugant Khanna]

Hi , i need to capture Video / Audio from Decklink Video Card Output (SDI)
and then send the same to Avid .
so far i am able to do the following only : but there is an audio / video
sync problem:

ffmpeg -f dshow -r 25 -s 720x576 -i video="Decklink Video
Capture":audio="Decklink Audio Capture" -vcodec copy -acodec copy -y
"output.avi"
The resulting output.avi file has audio / video sync out issue. and their
is a interlace issue . the editor has to put shift filter to correct this
issue of shakiness
How can i solve this at time of capture only .


Secondly: I would like to store this in DV25 in a MXF wrapper , something
like
ffmpeg -f dshow -r 25 -s 720x576 -i video="Decklink Video
Capture":audio="Decklink Audio Capture" -vcodec dvvideo -pix_fmt yuv420p
-acodec copy -y output.mxf
 Is this possible ? . i tried this but their are lot of frame drops ..


regards