ffmpeg Rendering giving error

[Hadi-Raja]

Hi,
I got the script to work for a couple of recordings but after that it is giving me continuous error for any recording I am running it for. Here is the error

`[Error] Failed rendering downloable video for BBB presentation {

args: Namespace(input='/var/bigbluebutton/published/presentation/ID', output='/var/bigbluebutton/published/presentation/ID/video.mp4'),
format: 'mp4',
docker: true,
workdir: './tmp/dataMoEDif'
}

Error: Command failed: ffmpeg -hide_banner -loglevel error -f concat -i ./tmp/dataMoEDif/slides.txt -threads 1 -y -filter_complex "[0:v]fps=24, scale=800:-2[out]" -map '[out]' -strict -2 -crf 22 -pix_fmt yuv420p ./tmp/dataMoEDif/slides.mp4
at checkExecSyncError (child_process.js:635:11)
at Object.execSync (child_process.js:671:15)
at renderVideo (/home/bigbluebutton/modules/slides.js:317:18)
at module.exports.renderSlides (/home/bigbluebutton/modules/slides.js:13:15)
at async module.exports.createPresentationVideo (/home/bigbluebutton/modules/presentation.js:10:20)
at async module.exports.createVideo (/home/bigbluebutton/modules/processor.js:20:26)
at async run (/home/bigbluebutton/index.js:10:9) {
status: null,
signal: 'SIGKILL',
output: [ null, , ],
pid: 117,
stdout: ,
stderr:
}
`
Can anyone help me out with it ?

Thanks

[clement850]

Hello, exactly the same issue here. Thanks

[embutidox]

Same error here.

[Hadi-Raja]

@tilmanmoser .. Please can you leave a comment regarding it or some guidance in helping fix this issue is highly appreciated.

Thank you.

[christmart]

What is your environment, where you run it?
I see the same problems with bbb-video-download on ubuntu 18 on a BBB 2.4.0 host.
If I process the videos with bbb-video-download on ubuntu 18 on a BBB 2.3.16 host, the processing succeeds.

ffmpeg gets killed from oom-killer:

Jan  5 05:52:53 bbb-27-29 kernel: [72337.405981] [20806]   997 20806 14432304 13469022 115712000   905227             0 ffmpeg
Jan  5 05:52:53 bbb-27-29 kernel: [72337.405982] Out of memory: Kill process 20806 (ffmpeg) score 904 or sacrifice child
Jan  5 05:52:53 bbb-27-29 kernel: [72337.406179] Killed process 20806 (ffmpeg) total-vm:57729216kB, anon-rss:53876088kB, file-rss:0kB, shmem-rss:0kB
Jan  5 05:52:54 bbb-27-29 kernel: [72338.557187] oom_reaper: reaped process 20806 (ffmpeg), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB

working container has

alpine 3.11.12
node v12.22.7
ffmpeg 4.2.4 (gcc 9.2.0)

not working container has

alpine 3.14.3
node v12.22.8
ffmpeg 4.4.1 (gcc 10.3.1)

[christmart]

I have now changed the following to make it working again until a real fix is availlable:

--- a/src/Dockerfile
+++ b/src/Dockerfile
@@ -1,8 +1,8 @@
-FROM node:12-alpine
+FROM node:12-alpine3.11

Why does the newer ffmpeg get all this memory until OOM hits?

[vahid75]

I faced same error and oom killer killed the ffmpeg process . thanks to @christmart for his suggestions.
I think it is because of ubuntu version. I had two containers with this base image FROM node:12-alpine on both ubuntu 16 and ubuntu 18. old version works correctly but on ubuntu 18 it has error.

[lonesomewalker]

Should be re-opened and merged :-|

[jarrodjay]

I have now changed the following to make it working again until a real fix is availlable:

--- a/src/Dockerfile
+++ b/src/Dockerfile
@@ -1,8 +1,8 @@
-FROM node:12-alpine
+FROM node:12-alpine3.11

Why does the newer ffmpeg get all this memory until OOM hits?

Can confirm- this worked perfectly. Before patch, it was using upwards of 20GB of RAM and still dying with OOM. ~1G now for the same video.