[Libav-user] How to specify output format

jim morgenstern jmorgie at yahoo.com
Sat Jan 19 16:17:28 CET 2013

I have C++ app [win 7]  that is reading and writing video/audio stream.

When I specify the output file as xxxx.MOV I am getting H264 compressed
video at 24 fps.

I want to have output as uncompressed at 30 or 60 fps according to the

Some simple [I hope] questions:
• What is [where can I find] the mapping between file name extension and
format used?
• Can I specify the output format I want rather than using av_guess_format
?  all the tutorials use guess
• What is your recommended format for uncompressed HD video ?


Jim Morgenstern
Image Mining LLC

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