FFMPEG Command Line Best Results?

[shampistols69]

Hi, how can I get the best (or good) results with FFMPEG command line MPEG-2 Video codec? I want to keep the bitrate at 5000kbps. I know 5000kbps is low for MPEG-2, I don't want a perfect picture, I just want it to look better. Here's my code.

for %%a in ("*.*") do ffmpeg -i "%%a" -s 704x576 -pix_fmt yuv420p -r 25 -codec:v mpeg2_qsv -vf setfield=tff -flags +ilme+ildct -g 1 -b:v 5000k -minrate:v 0k -maxrate:v 9000k -bufsize:v 1835008 -scan_offset 1 -ar 48000 -acodec ac3 -b:a 384k -f dvd -muxrate 10080k -packetsize 2048 "DVD %%~na.vob"
pause

[poisondeathray]

The -g 1 is a big problem and likely your main issue, that means intra encoding (no p, b frames) . You would need many times more bitrate for it to look ok

Use -g 15 for PAL dvd

You can try multipass encoding too

You can look at this thread for supposedly optimal ffmpeg mpeg2 encoding. (But the results are still worse than other mpeg2 encoders)
http://forum.doom9.org/showthread.php?t=174620

[shampistols69]

Thanks for that tip, the video looks better using -g 15. But now I can't control my bitrate (outputting around 4000kbps no matter what my bitrate setting is).

[poisondeathray]

Thanks for that tip, the video looks better using -g 15. But now I can't control my bitrate (outputting around 4000kbps no matter what my bitrate setting is).

Not sure, you're using mpeg2_qsv the intel quick sync encoder, not the software mpeg2 ffmpeg encoder - maybe it's a limitation ? Try -c:v mpeg2video for the software encoder

[jagabo]

To get the requested bitrate you have to use two pass encoding (I don't think the mpeg2_qsv encoder supports this). Or you can try setting the min, max, and average all to the same 5000k.