![]() ![]() I still have yet to test a bunch of other sub types (and rip some UHD/BRD samples to test with, which is time consuming), so this is just preliminary. I checked the output ts files, they contains the subtitle I want.ĭid a quick preliminary test with an anamorphic DVD (so, VOBSUBs) just to see if scale2ref worked as I figured it would with easy picture-based subs. Rerun the command, and it works, fps is around 37. That first convert the original video and subtitle to 1080P, and overlay them together I tried to learn what does this mean, then figured out that the subtitle steam first converted to a 4K size steam and overlay with the original, finally converted to 1080P, I had a problem with one of my subtitle files being encoded with WINDOWS-1252 rather than the expected UTF-8.I met a situation that my server can transcode 4K HEVC video to 1080P smoothly (40~80fps), but cannot when subtitle enabled (15fps)Īfter the investigation, I found the difference of ffmpeg commond is the filters. I used the ISO 639-2 three character language code for the subtitle language metadata which seems to be recognized by both mediainfo and vlc as their locale names.
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