GNU bug report logs - #39714
Real-time AV1 playback in VLC

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Package: guix-patches;

Reported by: Leo Famulari <leo <at> famulari.name>

Date: Fri, 21 Feb 2020 16:27:02 UTC

Severity: normal

Merged with 39719

Done: Leo Famulari <leo <at> famulari.name>

Bug is archived. No further changes may be made.

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Report forwarded to guix-patches <at> gnu.org:
bug#39714; Package guix-patches. (Fri, 21 Feb 2020 16:27:02 GMT) Full text and rfc822 format available.
Acknowledgement sent to Leo Famulari <leo <at> famulari.name>:
New bug report received and forwarded. Copy sent to guix-patches <at> gnu.org. (Fri, 21 Feb 2020 16:27:02 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Leo Famulari <leo <at> famulari.name>
To: guix-patches <at> gnu.org
Subject: Real-time AV1 playback in VLC
Date: Fri, 21 Feb 2020 11:25:58 -0500

On my Thinkpad x230, VLC cannot play back AV1 videos in real-time. They
stutter and drop frames.

This is because our VLC's AV1 playback is being provided by FFmpeg,
which by default chooses libaom, which is too slow.

By building VLC with the dav1d AV1 decoder, VLC chooses to use dav1d for
playback, and everything is fine.

Here are some AV1 samples; I like the 1080 "Summer Nature" clip:

https://www.elecard.com/videos
Information forwarded to guix-patches <at> gnu.org:
bug#39714; Package guix-patches. (Fri, 21 Feb 2020 16:29:02 GMT) Full text and rfc822 format available.

Message #8 received at 39714 <at> debbugs.gnu.org (full text, mbox):

From: Leo Famulari <leo <at> famulari.name>
To: 39714 <at> debbugs.gnu.org
Subject: [PATCH] gnu: VLC: Improve AV1 playback.
Date: Fri, 21 Feb 2020 11:28:09 -0500

* gnu/packages/video.scm (inputs): Add dav1d.
---
 gnu/packages/video.scm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gnu/packages/video.scm b/gnu/packages/video.scm
index f8c9f9e45a..255591755a 100644
--- a/gnu/packages/video.scm
+++ b/gnu/packages/video.scm
@@ -1123,6 +1123,7 @@ videoformats depend on the configuration flags of ffmpeg.")
     (inputs
      `(("alsa-lib" ,alsa-lib)
        ("avahi" ,avahi)
+       ("dav1d" ,dav1d)
        ("dbus" ,dbus)
        ("eudev" ,eudev)
        ("flac" ,flac)
-- 
2.25.1
Reply sent to Leo Famulari <leo <at> famulari.name>:
You have taken responsibility. (Fri, 21 Feb 2020 17:36:02 GMT) Full text and rfc822 format available.
Notification sent to Leo Famulari <leo <at> famulari.name>:
bug acknowledged by developer. (Fri, 21 Feb 2020 17:36:02 GMT) Full text and rfc822 format available.

Message #13 received at 39714-done <at> debbugs.gnu.org (full text, mbox):

From: Leo Famulari <leo <at> famulari.name>
To: 39714-done <at> debbugs.gnu.org
Subject: Re: Real-time AV1 playback in VLC
Date: Fri, 21 Feb 2020 12:35:51 -0500

Closed in favor of <https://bugs.gnu.org/39719>.
Did not alter fixed versions and reopened. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Fri, 21 Feb 2020 17:50:01 GMT) Full text and rfc822 format available.
Merged 39714 39719. Request was from Leo Famulari <leo <at> famulari.name> to control <at> debbugs.gnu.org. (Fri, 21 Feb 2020 17:50:02 GMT) Full text and rfc822 format available.
bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Sat, 18 Apr 2020 11:24:04 GMT) Full text and rfc822 format available.
This bug report was last modified 4 years and 6 days ago.

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