[SOLVED] [ffmpeg] Recommended settings to convert to x265+Opus?

[yetanotherlogin]

Hello,

To further compress videos into smaller files, I'd like to try x265 for video and Opus for audio.

I saw those two lines mentioned. Which should I use?

#for non-interlaced videos
ffmpeg -i input.ts -c:v libx265 -crf 26 -c:a libopus -b:a 128k -frame_duration 60 output.mp4

#for interlaced videos. Use -vf yadif=1 as interlace filter to prevent interlacing artifacts:
ffmpeg -i input.ts -vf yadif=1 -c:v libx265 -crf 26 -c:a libopus -b:a 128k -frame_duration 60 output.mp4

Thank you.

[davexnet]

As mentioned in the comments above, the second example contains the yadif filter to de-interlace the source -
and should only be used on interlaced sources.
That is your determining factor

[yetanotherlogin]

So I should the right mode (interlaced/non-i, where "progressive" = interlaced) depending on the input video.

# ffprobe test.mp4
Duration: 00:08:12.45, start: 0.000000, bitrate: 176 kb/s
  Stream #0:0[0x1](und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 426x240 [SAR 1:1 DAR 71:40], 123 kb/s, 29.97 fps, 29.97 tbr, 90k tbn (default)

For best results, are there other settings I should use in addition to?

[davexnet]

You have to find the right trade-off, something you're happy with. The higher the CRF number,
the smaller and worse quality the file. Probably CRF 22-26 would be the typical range

[yetanotherlogin]

Thank you