Page 4 of 4
Re: DNxHD encoding issues
Posted: Mon Jul 22, 2019 6:55 am
by emcodem
Hey Vinny,
great logs, thanks a lot!
in that case, the cause seems to be simple and obvious; looking at the ffreport file from the defective clip, last few lines:
av_interleaved_write_frame(): No space left on device
Is it possible that this is the problem that did hit you on the other defective clips as well?
By the way, on the first topic of this thread, it looks like there is a good chance that the next official release will be updated accordingly:
https://sourceforge.net/p/bmxlib/discus ... #9b6a/9f62
cheers!
Re: DNxHD encoding issues
Posted: Mon Jul 22, 2019 7:19 am
by Vininski
This makes a lot of sense, I've been getting the status "WARNING: Low work storage! The job will continue when you have at least 6 GB free storage." in FFAStrans when transcoding a lot of the IV heavy days (very long takes so the cache gets full), but I had read that message to mean it would continue after space was freed up?
I'm going to try moving the cache from the 300GB SSD to the 90TB RAID (stores all the media, so it will save on transfers at least) to see if this prevents the issue.
Re: DNxHD encoding issues
Posted: Mon Jul 22, 2019 8:11 am
by emcodem
Yeah, working on a "too small" disk is problematic. Even if ffastrans checks the space before a process starts, it cannot foresee how much space is needed for your transcode format, then what about multiple paralell processes etc...
If you switch your "cache" to the storage where your files go in the end, make sure you check the "move instead of copy" checkbox at the deliver nodes, this way you save a lot of I/O and time.
Re: DNxHD encoding issues
Posted: Thu Jul 25, 2019 12:21 am
by Vininski
Yes it's definitely a lot quicker to transfer these large files when set this way and I think it may actually be faster in total job time to. Best part is that now after moving the cache I am no longer having the "short" transcodes issue. Every batch since has been perfect. Thank you so much for you help emcodem! I wouldn't have got this far without your very generous in depth help on these issues. I'm thrilled to have it working smoothly and can now work on automating even more of the workflow.
Re: DNxHD encoding issues
Posted: Tue Jul 30, 2019 1:12 pm
by emcodem
Thanks for the flowers Vinny
As a result of this topic, thankfully the bmx guys added a commandline switch to bmxtranswrap "--umid-type" which should be set to "uuid".
The changes are currently only in the code, we will need to wait until they released a new public available build before we can ask steinar here for utilizing this new feature of bmxtools.
Code changes:
https://sourceforge.net/p/bmxlib/bmx/ci ... 562138577/