Pi2 with LibreELEC (Leia) v8.95.3 BETA - 720p dropped frames

jaspov · February 1, 2019 at 10:05 AM

Running LibreELEC (Leia) v8.95.3 BETA on a pi model 2. I have a 720p movie that drops a lot of frames, making it unwatchable.

With debug log on I see it plays at about 8fps and all CPU's are above 90% (fluctuating to a 100%). Is this due to the specific codecs in the file or another issue?

File plays fine on laptop (just checked)

Attached file with mediainfo. Now downloading the zip file with full debug log, which files from the zip are needed?

**chewitt** · February 1, 2019 at 10:14 AM Official Post

H.264 is an 8-bit video standard and RPi has full support for hardware decoding it. Your video is 10-bit, which is not in-spec for the standard, so your RPi can only software decode it (even at 720p resolution) and as you've discovered that's beyond the CPU capabilities of an RPi device. You'll need to upgrade to something with more CPU grunt (Intel CPU, not ARM) or re-encode the video to 8-bit.

jaspov · February 1, 2019 at 10:52 AM

Thanks Chewitt, appreciated!

Not a codec expert, but suspected something in this area. Ran file through handbrake and now it runs fine.

Appreciate the explanation as well, now know what to look for next time should this happen again! (had another file with an issue like this a few weeks ago)