I'm not sure that what Mikhail wants really exists. If I understand correctly, you want to retain original encoding and drop one frame every two frames.
If this would be possible, you would have to work at the DNxHD inner level, identify each frame start/end (by headers), bit-stream copy whichever frames you would need, and then re-generate the DNxHD layer and headers to reflect all the changes you have made. I may be wrong, but I believe with current FFmpeg implementation you can only work either with stream copy (if you don't want to change encoding, nor frame rate, which defies his purpose), or use the previous suggestions to cut framerate by half, which implies on re-encoding (which again, defies his purpose). _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
