[FFmpeg-user] "DXVA-compliant" H.264 encode

Carl Eugen Hoyos cehoyos at ag.or.at
Thu Aug 7 11:09:30 CEST 2014

Francois Visagie <francois.visagie <at> gmail.com> writes:

> ffmpeg -y -i
> "concat:VTS_01_1.VOB|VTS_01_2.VOB|VTS_01_3.VOB|VTS_01_4.VOB|VTS_01_5.VOB"

(I don't know how you get the vob files but I still 
believe mplayer -dumpstream is a very good option to 
avoid the concat protocol.)

> -sn -af aformat=channel_layouts=stereo -c:v libx264 
> -preset veryslow -b:v 1000000 -threads auto -pass 2 
> -movflags faststart "Rise of The Planet of The Apes.mp4"

(Console output missing.)

You are neither specifying a profile nor a level, so 
how should x264 know that you don't want maximum 
Afaik, no hardware supports more than profile high, 
the level probably depends on your gpu, but you can 
definitely try with a low level and slowly increase 
to find out the exact limits.

Carl Eugen

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