> So, if I have 24000:1001 material and I want to encode for NTSC DVD, I > need to specify -F 4 -p (not -F 1 -p). This way, the encoded file has a > DVD-compliant frame rate (30000:1001) with the proper MPEG flag telling > the decoder to do pulldown (to reconstruct the 24000:1001 video from the > encoded 30000:1001) at play time.
When you use -F 4 -p, the mpeg file has its framerate set to 30 fps, but there are only 24 frames encoded per second. The encoder puts in repeat field flags that tell the decoder to do the pulldown, which has the effect of converting 24 frames into 30 frames. So it's more correct to say that the decoder contructs 30000:1001 video from a 24000:1001 source, as opposed to the other way around. ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
