[Ffmpeg-devel] WMA encoding and Windows Media Player for Mac OS X

[Tyler Loch]

> what is the source for the encoding? .asf? do you encode or stream  
> copy
> (-vcodec copy / -acodec copy)?

For the majority of tests, I've been encoding from an H.264/AAC  
source file at 24fps to WMV2/WMAV2 .wmv.
Encoding to .avi and then streamcopying to .asf/.wmv has the same  
problem.

> does encoding with -intra change anything with unmodified svn?

It changes the duration and location of the skips:

With -intra:
Seconds: 4--->10, 16---->22

With -g 200:
Seconds: 1--->7, 8---->15

Afterwards, it plays perfectly fine.

Here's the commandline I'm using:
./ffmpeg  -y  -i '/Users/tylerl/Desktop/''nas-intro.mp4'   -s  
640x352  -vcodec wmv2  -g 200  -qmin 4  -b 1500k -acodec wmav2  -ar  
48000 -ac 2 -ab 128k   '/Users/tylerl/Desktop/'/'0304svn109.wmv'

Would it be useful to see the entire output?


-Tyler Loch
Techspansion LLC
http://www.techspansion.com