On Dec 9, 2008, at 1:07 PM, Michael Conrad wrote: > On Sat, 06 Dec 2008 23:49:36 -0500, Chase Douglas > <[EMAIL PROTECTED]> wrote: >> For testing, I have set the aspect ratio manually to 4:3, but I'm >> wondering how I can determine the correct aspect ratio in the future. > [...] >> So, how can I encode an mpeg stream at a pixel resolution of 256x256, >> yet still have the real aspect ratio available in the stream itself? > > Some formats contain aspect info, others don't, and some might be > limited > in what aspect ratios they can describe. You need to ensure that > you are > using a container/codec which can contain the aspect ratio you want to > use. I'd reccomend reading up on the different video formats, and > then > try one of them which supports what you need. libav *should* > preserve the > sample_aspect_ratio value if possible. If it doesn't, and the format > supports it, report it as a bug.
Thanks. Do you know where I could find information on each format, or am I going to need to do lots of google searches to find out the information? _______________________________________________ libav-user mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/libav-user
