MP4 transcoding stops working

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kibi
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Joined: Mon Feb 29, 2016 12:57 pm
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MP4 transcoding stops working

Post by kibi » Wed Feb 01, 2017 10:19 am

Hi!

There is an issue while coding MP4 files from external AVS source.
FFASTRANS is seems to be using external AviSynth installation when processing AVS input files. I used the plugin FFMS2.dll which comes bundled with FFASTRANS, and copied it to external AviSynth installation. But sometimes, especially on big files, the encoding freezes in the middle.
01-02-2017 12-36-18.png
01-02-2017 12-36-18.png (191.77 KiB) Viewed 2656 times
01-02-2017 12-39-21.png
01-02-2017 12-39-21.png (235.46 KiB) Viewed 2656 times
01-02-2017 12-41-54.png
01-02-2017 12-41-54.png (124.47 KiB) Viewed 2656 times
I have sent all the debug information and AviSynth scripts in e-mail through the administration contact
page.

P.S. Have tried to find a workaround - have made all video sources and indexes local (initially they were at network locations). And it seems to be helpful for some time... but it has frozen again. Have tried to transfer all the components to local drive - FFMPEG, all AVISynth scripts, indexes and video files. Nope. It doesn't help. :?
Alexander Sorkin

admin
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Joined: Sat Feb 08, 2014 10:39 pm

Re: MP4 transcoding stops working

Post by admin » Thu Feb 02, 2017 8:41 pm

Thanks Alexander for your great effort in helping me trying to resolve this. Although I have not yet been able to recreate the issue but looking at your screen shot it looks like ffmpeg is using memory close to what a 32bit applications can manage. Maybe that might be the problem. If so the next version might solve the problem. It sports an experimental 64bit AviSynth+ and test so far has showed some great results, and it seems pretty stable. Anyway I will try and investigate further.

-steinar

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kibi
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Re: MP4 transcoding stops working

Post by kibi » Wed Feb 22, 2017 10:30 am

I narrowed the location of the bug to FFMPEG/Avisynth. The issue is reproducible (unfortunately not always) without FFASTRANS and in a local environment. I think it might be some hardware issue. It requires to administer a loading tests.
Alexander Sorkin

admin
Site Admin
Posts: 1371
Joined: Sat Feb 08, 2014 10:39 pm

Re: MP4 transcoding stops working

Post by admin » Wed Feb 22, 2017 10:36 am

Hi Alexander. I have also figured out that it's a AviSynth/FFmpeg bug but I have not had the time to really dig into why. I have been to busy finishing the 0.8.0 version. And while we're at it, check your private messages...

-steinar

veks
Posts: 34
Joined: Fri Oct 25, 2019 6:51 am

Re: MP4 transcoding stops working

Post by veks » Thu Nov 21, 2019 1:20 pm

I have same problem, where encoding would just stop at some point. 66.5% let's say.

emcodem
Posts: 509
Joined: Wed Sep 19, 2018 8:11 am

Re: MP4 transcoding stops working

Post by emcodem » Thu Nov 21, 2019 2:03 pm

Hi veks,
can you share your workflow please?

Thanks!

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