Text only | Text with Images

Avidemux Forum

Avidemux => Main version 2.6 => Topic started by: eumagga0x2a on August 17, 2016, 05:55:32 PM

Title: [LibVPX decoder] U/V swapped
Post by: eumagga0x2a on August 17, 2016, 05:55:32 PM
Avidemux decodes all WebM videos with U/V chroma components swapped. Inserting the "Swap UV" filter restores the correct colors.

A possible testcase: https://www.youtube.com/watch?v=2-QbUQUaB24 (https://www.youtube.com/watch?v=2-QbUQUaB24), use the video with the format code 43.

Avidemux built from https://github.com/mean00/avidemux2/commit/3ce52bbdcd2bd52f217c32d8c5780c350d0764fd (https://github.com/mean00/avidemux2/commit/3ce52bbdcd2bd52f217c32d8c5780c350d0764fd).

PS: if the issue affects other Linux distributions (Ubuntu etc.) and even other platforms, this could be IMVHO a release blocker.
Title: Re: [LibVPX decoder] U/V swapped
Post by: mean on August 17, 2016, 06:17:56 PM
It's not a general problem, other VP9 videos are fine
Title: Re: [LibVPX decoder] U/V swapped
Post by: eumagga0x2a on August 17, 2016, 06:44:35 PM
You're right, now I see that only VP8 is affected.
Title: Re: [LibVPX decoder] U/V swapped
Post by: eumagga0x2a on August 18, 2016, 11:53:33 AM
Oh my... (http://avidemux.org/smif/index.php/topic,16265.msg72350.html#msg72350), did the issue exist all the time at least since the code in avidemux_plugins/ADM_videoDecoder/vpx/ was last touched in e7a1b99311f0548eec40cac1863f4dbe17edb54a 4 years ago, but probably much longer?
Text only | Text with Images