Never Ending task with a very low frame count .y4m file

[moisespr123]

Hi everyone,

I've been encoding videos in my own distributed computing project. I've been doing this by splitting a video into 1-second segments with ffmpeg and then submitting each clip to the project.

While I'm able to encode most of my clips, this one which seems to have just a couple of frames is not working: https://drive.google.com/file/d/1dvewc7SwdE7BRFQUa2VsvcredixJuJ9_/view?usp=sharing

rav1e never seems to finish but uses 100% of the CPU thread, so it is doing something.

Parameters used are:
--quantizer 175 -s 0 --low_latency false

Is it stuck in a loop which seems to never finish and doesn't exit? I'm using rav1e 774b0d1, which is the latest commit as of this issue.

std output just stays as follows:

3840x2160 @ 30000/1001 fps

encoded 1 frames, 0.00 fps, 8493.22 Kb/s                    

[tdaede]

I can reproduce this. It never happens with low_latency true, so it probably has something to do with frame reordering.

[shssoichiro]

I think I have a fix for this. I'm going to do some more testing after lunch.

[moisespr123]

Thanks, I'll wait for the fix.

[shssoichiro]

As an update on this, I have a fix that passes manual tests, but the automated tests are hanging. I will open a PR as soon as I have the automated tests working.