Interlacing and field order problem

[Boklavdi]

Jagabo,

Thanks. Will try this again.


Regards,
Boris

[jagabo]

There may be some problems with the mp4 remux. The field rate (50 fields per second) is getting confused with the frame rate (25 frames per second). I'm looking for a way to fix that.

[jagabo]

The video reencoded with ffmpeg/x264

ffmpeg -y -i 00038.mts -vcodec libx264 -preset slow -crf 12 -x264opts tff -acodec copy 00038.mp4

This isn't lossless but the quality is good and the video is still interlaced, tff. I used CRF 12 which is very high quality but caused the resulting video to be much larger. You can use a higher crf value to get smaller files but the quality will be lower. Around 18 is typically considered to be nearly lossless when viewed at normal playback speed. This will be very slow on your CPU.

[jagabo]

I still haven't found any way to remux your MTS files to MP4 without the frame rate flag changing from 25 fps to 50 fps. Media players recognize the mp4 files are interlaced and continue to play them at the correct rate with deinterlacing (when enabled) but VirtualDub thinks they're 50 fps and have twice as many frames.