AV1 gpu-next color plane rotated 180° in playback

[faustaahmad]

Important information

Android version: 11 mpv-android version: 2023-11-30-release / 8033 (latest november 2023 release)

Description

Just enable gpu-next then play AV1 video wih SW decoder Video used E09 Yuru Yuri (Trix's release)

gpu-next (landscape only)
playback	paused

Additional information

# mpv.conf
no-deband
cache=no
demuxer-readahead-secs=60
dither=no
vd-queue-enable=yes
vd-queue-max-bytes=1000MiB
vd-queue-max-samples=36000
vd-queue-max-secs=60

# Language & subtitles
sub-visibility=yes
alang=jp,jpn,ja,en,eng
slang=jp,jpn,ja,en,eng

# Subtitle
demuxer-mkv-subtitle-preroll=yes
sub-auto=fuzzy
audio-file-auto=fuzzy
sub-file-paths=ass:srt:sub:subs:subtitles
embeddedfonts=yes
sub-fix-timing=no
sub-ass-force-style=Kerning=yes

# Scaling
scaler-resizes-only=no
linear-downscaling=yes
correct-downscaling=yes
sigmoid-upscaling=yes

scale=bilinear
dscale=spline16
cscale=bilinear

# Antiring
scale-antiring=0
dscale-antiring=0
cscale-antiring=0

[sfan5]

Both your screenshots are from gpu-next. Are you sure it's not another option doing this?

Can't reproduce here either.

[faustaahmad]

Potrait mode work fine though Landscape mode caused the problem on my side Video resolution is 720p, while my phone still using 720p display too

Tried: Blank mpv.conf - same problem occur Changing scaling filter in "Video" settings - same problem occur Enable Low quality decoding - same problem occur 480p AV1 video (sw upscaled by mpv to 720p) - no problem in both potrait/landscape 1080p AV1 video (sw downscaled by mpv to 720p) - no problem in both potrait/landscape 720p AV1 video (same & different encoder, 2 video) - potrait fine, landscape has this issue

Idk how to grab logcat without computer or root

[sfan5]

Idk how to grab logcat without computer or root

Me neither but without the log there's no chance at investigating this.

[faustaahmad]

Tried to grab the logcat (my device didnt hv root) Enable USB debugging & connect to laptop Then I used adb logcat -s 'mpv:*' '*:F' and it doesnt output anything other than "Beginning of crash or system or main" Tried using different usb cable & still same

This bug seems to only happen on my device with gpu-next, AV1, and same resolution as my screen (720p) Other than that, it's fine even with gpu (gpu-next disabled)

[sfan5]

If adb logcat also prints nothing then your device does not expose any debug info.

[faustaahmad]

Tried with this app, but still doesnt output any log for mpv until I enabled some random debugging settings inside dev options (that idk what it'll change) Also tried with my laptop too after those random dev options that I have enabled, but it still spit out nothing 🙃 So here we go my logcat.txt but I cant use the command, sorry if it's noisy Hope this'll help

[abdallahmehiz]

This also happens to me.

Some Device Info:

Xiaomi Redmi Note 8 Pro, Android 14 AOSP. mpv-android 2023-11-30-release

Configuration info

The only things i changed from installing mpv-android are Enabled gpu-next mpv.conf:

vf=format=yuv420p

Episode 3 of MTBB'S Release

Video of it happening

[sfan5]

As it turns out this seems to affect certain AV1 videos and not all. I can also reproduce it myself now (w/ the FOSDEM recordings).

[abdallahmehiz]

For some reason, using any video aspect in the settings and even using the property video-aspect-override to an aspect ratio different from the video's original fixed this for me.

[faustaahmad]

For some reason, using any video aspect in the settings and even using the property video-aspect-override to an aspect ratio different from the video's original fixed this for me.

The bug only occur if the the video isnt up/downscaled Also if aspect ratio set to different value, it's working properly but... need to do it manually and it wont look as good as with original aspect ratio

[abdallahmehiz]

it wont look as good as with original aspect ratio

You can try making it unnoticeable like 1920/1081 or something like that

[faustaahmad]

Here's better solution to the problem without sacrificing aspect ratio that much, thanks for the idea

# change height to your native device
[av1 fix rotate]
profile-cond=get("video-dec-params/codec")==av1 and get("height")==720
video-scale-x=0.999999

[abdallahmehiz]

Here's better solution to the problem without sacrificing aspect ratio that much, thanks for the idea

video-scale-x=0.99999
video-scale-y=0.99999

~~Shouldn't changing only one of these fix it? :sweat_smile: Why change both?~~

[sfan5]

simpler workaround: vd-lavc-film-grain=cpu

[sfan5]

The workaround is now enabled by default.