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Kagami / boram

:film_strip: Cross-platform graphical WebM converter
https://github.com/Kagami/boram/releases
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AV1 compression no work #41

Closed IlluminatiWave closed 5 years ago

IlluminatiWave commented 5 years ago

The promised superior codec compression didn't work.

My video originally lasted 20 minutes, but I decided to convert the last 3 minutes to try

Leaving aside that it takes 3 days to convert it. It came to weigh a little less than the video with a duration of 20 minutes, only a piece of 3.

Also the video reproduces with frightful slowness

My spec

Core i5 4200U 12 GB RAM DDR3 SoDIMM Gtx 840M (2 GB VRAM)

Energy profile "Maximum performance" Real-time execution Nothing open

-----Video Specs------ Input File size = 2965 MB Duration = 21:34 Bitrate = 19209 Container = QuickTime / MOV

Video Codec = h264 Resolution = 1296x732 Frame Rate = 60fps Pixel format = yuv420p

Audio Codec = aac Channels = 2(Stereo)

Output File size = 2062 MB Duration = 3:09 Bitrate = 91555Kbps (wtf) Container = Matroska / WebM

Video Codec = av1 Resolution = 1296x732 Frame Rate = 60fps Pixel format = yuv420p

Audio Codec = Vorbis Channels = 2(Stereo)

Kagami commented 5 years ago

Hi. What do you mean by "doesn't work"? What error do you get?

Kagami commented 5 years ago

As far as I can understand, libaom works too slow for you. There is no much we can do here, though right now I'm updating it to the latest git version with better build flags, so it might help a bit. Also we have similar issue regarding AV1 in #42, so closing this one.

Regarding slow playback - you may try new dav1d decoder. Though it seems to be not included in mpv builds here, so you may search other builds / build by yourself with media-autobuild_suite. Also I'm planning to enable dav1d in new boram builds too.

Regarding output size - that depends on the bitrate/qp you set. If your 3-minute cut has same bitrate as 20-minute, size should be the same. New AV1 codec should improve compression for the same bitrate, but it will use the bitrate you specified.

Kagami commented 5 years ago

Please try 0.5.4 release.