Concatenation failed while executing FFmpeg on Windows 10

[b1scoito]

It seems like it cannot find any files to concat.

I tried executing the FFmpeg command manually and this is the output I get:

PS C:\Users\biscoito\Desktop> ffmpeg -y -hide_banner -loglevel error -f concat -safe 0 -i .4d659c83/concat -i .4d659c83/audio.mkv -c copy -map 1 -c copy -map 0 output.mkv
[concat @ 0000017c3aa7d580] No files to concat
.4d659c83/concat: Invalid data found when processing input

[redzic]

It seems like you're still running on the old python version of av1an. Can you confirm that this issue exists on the latest rust version (0.3.1)?

[b1scoito]

Correct. I'm running the python version, I tried installing/compiling it directly with cargo, but couldn't figure out on how to compile since there's no How to compile section on the README.

[redzic]

Yeah, compiling on Windows is a bit complicated currently and there's an open issue about documenting it, so hopefully we can address that soon. However we provide binary releases on the github releases page, could you try that binary?

[b1scoito]

With the compiled version I get a different error:

WARN [av1an_core::broker] Encoder failed (on chunk 2):
encoder crashed: exit code: 1
stdout:

stderr:
        -------------------------------------------

        SVT [version]:  SVT-AV1 Encoder Lib v0.8.6

        SVT [build]  :  Visual Studio 2019 64 bit

        LIB Build date: Nov 29 2020 07:56:19

        -------------------------------------------

        Unprocessed tokens:  --crf

        Error in configuration, could not begin encoding! ...

        Run C:\dev\codecs\SvtAv1EncApp.exe --help for a list of options

source pipe stderr:

ffmpeg pipe stderr:
        av_interleaved_write_frame(): Broken pipe
        Error writing trailer of pipe:: Broken pipe

WARN [av1an_core::broker] Encoder failed (on chunk 2):
encoder crashed: exit code: 1
stdout:

stderr:
        -------------------------------------------

        SVT [version]:  SVT-AV1 Encoder Lib v0.8.6

        SVT [build]  :  Visual Studio 2019 64 bit

        LIB Build date: Nov 29 2020 07:56:19

        -------------------------------------------

        Unprocessed tokens:  --crf

        Error in configuration, could not begin encoding! ...

        Run C:\dev\codecs\SvtAv1EncApp.exe --help for a list of options

source pipe stderr:

ffmpeg pipe stderr:
        av_interleaved_write_frame(): Broken pipe
        Error writing trailer of pipe:: Broken pipe

ERROR [av1an_core::broker] [chunk 2] encoder crashed 3 times, shutting down worker
ERROR [av1an_core::broker] [chunk 2] encoder crashed: exit code: 1
stdout:

stderr:
        -------------------------------------------

        SVT [version]:  SVT-AV1 Encoder Lib v0.8.6

        SVT [build]  :  Visual Studio 2019 64 bit

        LIB Build date: Nov 29 2020 07:56:19

        -------------------------------------------

        Unprocessed tokens:  --crf

        Error in configuration, could not begin encoding! ...

        Run C:\dev\codecs\SvtAv1EncApp.exe --help for a list of options

source pipe stderr:

ffmpeg pipe stderr:
        av_interleaved_write_frame(): Broken pipe
        Error writing trailer of pipe:: Broken pipe

Params: Params: --preset 4 --keyint 240 --rc 0 --crf 25 --tile-columns 1 --tile-rows 0

[redzic]

What version of SVT-AV1 are you using? The syntax for the command line options recently changed for SVT-AV1, and we haven't updated the default parameters for SVT-AV1 yet as I believe they are still working on an official release. You can manually specify the parameters with -v though.

EDIT: Nevermind. I see the version in the logs.

[b1scoito]

I'm running on latest. I mean, I tried running everything on latest and didn't seem to work out well, the release binary is not compatible with FFmpeg 5.0 aswell.

[n00mkrad]

I'm running on latest.

You are running SVT-AV1 0.8.6 which is not latest. Also, try it with --force.

[b1scoito]

I mean, it's the newest release in their releases section.

The --force option gives me the same error.

[redzic]

--force only disables the checking of the parameters from av1an itself, so if it was already getting to the point of encoding it will have no effect. Can you try -v "--preset 4 --keyint 240 --rc 0 --qp 25 --tile-columns 1 --tile-rows 0"? Hopefully SVT-AV1 0.8.6 has --qp as an allowed CLI arg.

[b1scoito]

Seems to be working now. :)

[n00mkrad]

Seems to be working now. :)

Either way I can highly recommend updating SVT, 0.8.7 is a lot faster.

[b1scoito]

Awesome. I'll try.