Evaluate alternative codec candidates for proxies (FFV1...)
Submitted by antistress
Assigned to antistress
Pitivi proxies use mkv format with
- video : MJPEG or subsidiary ProRes
- audio : FLAC was first considered but T3540 leads to (temporary ?) replace it with Opus.
We should evaluate if MJPEG/ProRes/Opus are best candidates regading the emergence of alternatives like Motion JPEG 2000 (MJ2K), FFV1, etc.
especially FFV1 (version 3) : Lossless intra-frame codec maintained by the FFmpeg project under the leadership of Michael
Some references :
-From Österreichische Mediathek website :
"It's probably the fastest lossless codec that has compression comparable to JPEG2000-lossless" (http://download.das-werkstatt.com/pb/mthk/info/video/FAQ-digital_video_archiving.html#ffv1)
See benchs made September 4th, 2013 : http://download.das-werkstatt.com/pb/mthk/info/video/comparison_video_codecs_containers.html#codec_tests (these benchs are shown in a graphical way here http://img15.hostingpics.net/pics/694770Capturedcrande20160525002257.png)
Anyway, I think that proxies should be lossless (=FFV1+FLAC for instance) to be serious.
(see also regarding another use for FFV1 within Pitivi : T7432 "Allow export using FFV1 video codec")