AV1 capabilities in Raspberry Pi 4 - anyone on nightly LE 12 ?

elim_garak · November 22, 2024 at 6:58 PM New

I've read comments from people saying they can play AV1 media on their rpi4 (no LE, just raspbian) while others say they are choppy.

I'm using LE 11 and I'm one of the later ones. On slow scenes you can see it drags, while on fast action scenes you can definitely see the jumps.

I've noticed that there have been recent improvements in the AV1 decoder dav1d with latest 1.5.0 even saying "Optimize Armv8.0 NEON"

And LE HEAD has been updated to use that latest version https://github.com/LibreELEC/Libr…av1d/package.mk

What I'd like to know is if anyone running nightly LE12 (note LE 12.0.1 doesn't have latest dav1d) can play 1080p AV1 smoothly?

Is there hope for the RPi4 or should I just stop dreaming and move on to the RPi5?

For AV1 video samples:

http://download.opencontent.netflix.com.s3.amazonaws.com/AV1/Sparks/Spa…80-2194kbps.mp4 (slow scene)

https://test-videos.co.uk/vids/sintel/mp…080_10s_2MB.mp4 (fast scene)

https://test-videos.co.uk/vids/sintel/mp…080_10s_5MB.mp4 (fast scene)

more bitrates on https://test-videos.co.uk/sintel/mp4-av1

Thanks

trent · November 22, 2024 at 7:48 PM New

Random test samples is a waste of time.

Video codecs have standard levels and profiles. You need to find the technical details of those, and encode clips in such a way that they use the maximum allowed frame size, bitrate, tiles etc for that level and profile. Then you test each clip and depending on which plays perfectly you can say you are Main Profile Level 3.1 compliant (or whatever). Then you know in future how to encode compatible content.

MatteN · November 22, 2024 at 8:08 PM New

There is a number of test files here: https://kodi.wiki/view/Samples

MatteN · November 23, 2024 at 8:05 PM New

https://test-videos.co.uk/vids/sintel/mp…080_10s_5MB.mp4 plays fine on Pi4 and Pi5 on latest nightly.

So does https://test-videos.co.uk/vids/sintel/mp…80_10s_30MB.mp4

**popcornmix** · November 25, 2024 at 1:41 PM New

With latest nightly, you can enable NUMA to get better performance. See numa thread.

Make sure bootloader is updated to latest and set:

SDRAM_BANKLOW=1 (for pi5)

SDRAM_BANKLOW=3 (for pi4)

using using rpi-eeprom-config.

From previous testing, on a pi5 I'd expect any 8-bit 1080p60 AV1 to play fine, and most 10-bit 1080p60.

1080p24/1080p30 will have no problems.

NUMA likely means any 10-bit 1080p60 will play on a Pi5.

Pi5 is around 2 to 2.5x the speed of Pi4, so Pi4 abilities will be lower.

I'd predict any 720p60 AV1 files to play okay, and some 1080p30 on a Pi4.

Reddog · November 27, 2024 at 10:00 PM New

Quote from popcornmix

With latest nightly, you can enable NUMA to get better performance. See numa thread.
Make sure bootloader is updated to latest and set:
SDRAM_BANKLOW=1 (for pi5)
SDRAM_BANKLOW=3 (for pi4)
using using rpi-eeprom-config.

I'm always up for an increase in performance, especially when it's for free!

Does this apply to the latest le12 nightly (LibreELEC-RPi5.aarch64-12.0-nightly-20241114-f000f3c.img.gz) or is it just the latest le13 nightly?

Thanks.

**popcornmix** · November 28, 2024 at 12:15 PM New

Quote from Reddog

Does this apply to the latest le12 nightly (LibreELEC-RPi5.aarch64-12.0-nightly-20241114-f000f3c.img.gz) or is it just the latest le13 nightly?

LE 13 only.

Reddog · November 30, 2024 at 12:12 AM New

Quote from popcornmix

LE 13 only.

Thanks.

I've been putting off upgrading to le13 because le12 is so stable - hope le13 is the same.

**popcornmix** · November 30, 2024 at 12:48 PM New

Quote from Reddog

I've been putting off upgrading to le13 because le12 is so stable - hope le13 is the same.

I've been running le13 as daily driver for months. I've had no problems.

MatteN · November 30, 2024 at 1:12 PM New

Quote from popcornmix

I've been running le13 as daily driver for months. I've had no problems.

Same here, only 1 of my 6 Pi's run LE12, rest is on LE13.

AV1 capabilities in Raspberry Pi 4 - anyone on nightly LE 12 ?

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