topic Re: MPEG2 Encoder Frames per second in Intel® Integrated Performance Primitives

MPEG2 Encoder Frames per second

ggrosselohmann — Tue, 12 Aug 2008 13:14:43 GMT

Hi,

I use the standard example umc_video_enc_con for encoding files to a mpeg2 video.

The created video file can be played with windows media player,

but the frames per second are incorrect.

If I set the Time of the Input Data or the Output Data this has never any effekt to the

playback speed. I also increase the time differenceswith factor ofhundred.

Has anyone an idea how I can set the frames per second?

best regards,

Gerd Grosselohmann

Re: MPEG2 Encoder Frames per second

Leonid_K_Intel — Wed, 13 Aug 2008 15:07:26 GMT

Hi Gerd,

could you provide command line and par-file used (if any) together with dump of sequence header and extension? Just about 100 first bytes of encoded file from any hex-viewer?

Didn't you check framerate in encoded file with other media players/viewers?

Time in input doesn't affect framerate at all. Framerate is set either from command line with -f number or in par-file. Keep in mind that mpeg2 support only few discrete numbers for framerate: 24, 25, 30, 50, 60, 24/1.001, 30/1.001 and 60/1.001. There are also nominator and denominator for frame rate, but they are rarely supported by players.

Regards,

Leonid

Re: MPEG2 Encoder Frames per second

ggrosselohmann — Fri, 22 Aug 2008 10:27:11 GMT

Hi Leonid,

thank you for the answer. I did not know that mpeg2 supports only a few numbers of framerate. I solved the problem by using the function "RepeatLastFrame".

best regards,

Gerd