ffmpeg syntax issue, is ok up to version 7th-September-2023, not later vers

[JN-]

I have been using an ffmpeg VMAF syntax to extract VMAF that has worked up till now. Version 7th-Sept-2023 is ok but not later versions.

I am now using static build version 28th-November-2023. --enable-libvmaf is part of the build. Using windows. The PATH to model files is D:\RQM\VMAF-models\

The error message is ...

Error applying option 'model_path' to filter 'libvmaf': Option not found
Failed to set value '[0:v]setpts=PTS-STARTPTS[main];[1:v]setpts=PTS-STARTPTS[ref];[main][ref]libvmaf=model_path='D\:\\RQM\\VMAF-models\\VMAF_v0.6.1.json'ool=harmonic_mean:eof_action=endall:n_threads=7' for option 'lavfi': Option not found
Error parsing global options: Option not found

Note that in this post there is a funny character inserted in place of two characters, namely a colon and a p i.e. colonpool. The funny char is not part of syntax.

I thought there was a dedicated ffmpeg forum to post this but it's ffmpegx. Any help with this is greatly appreciated, thanks.

The syntax I am using still works fine for ffmeg builds prior to and including 7th-Sept-2023.

The full syntax I am using is ... for FHD
ffmpeg -i %1 -i %_REFERENCE_FILE% -lavfi "[0:v]setpts=PTS-STARTPTS[main];[1:v]setpts=PTS-STARTPTS[ref];[main][ref]libvmaf=model_path='D\:\\RQM\\VMAF-models\\VMAF_v0.6.1.json'ool=harmonic_mean:eof_action=endall:n_threads=7" 2>"ffmpeg VMAF.txt" -f null -

for 4K ...
ffmpeg -i %1 -i %_REFERENCE_FILE% -lavfi "[0:v]setpts=PTS-STARTPTS[main];[1:v]setpts=PTS-STARTPTS[ref];[main][ref]libvmaf=model_path='D\:\\RQM\\VMAF-models\\vmaf_4k_v0.6.1.json'ool=harmonic_mean:eof_action=endall:n_threads=7" 2>"ffmpeg VMAF.txt" -f null -

[richardpl]

For ffmpeg help ask on ffmpeg-user mailing list, this forum is mostly about closed and corporate solutions, exception being vapoursynth and avisynth.

[ProWo]

Read
https://github.com/Netflix/vmaf/blob/master/resource/doc/ffmpeg.md

[JN-]

Thanks Richardpl, How/where to access an ffmpeg-user mailing list ?

Thanks ProWo, I came across the above vmaf info elswhere and AFAIK my syntax is as per instructions in that.

https://github.com/fifonik/FFMetrics FFMetrics -- Windows-centric GUI for PSNR, SSIM and VMAF visualization. This reference from fifonik, he helped me with the syntax I posted above, way back while I was a member of Vegas Pro forum. Barred now. I believe the syntax is correct as it still works with previous static builds of ffmpeg, just not the few recents ones. So it's something else.

[JN-]

Got it. https://www.reddit.com/r/ffmpeg/comments/11fnnou/new_syntax_libvmaf_model_the_model_path_option_is/

new syntax libvmaf model ..The "model_path" option is deprecated: use model='path=...'.

[Swedaniel]

I have been using an ffmpeg VMAF syntax to extract VMAF that has worked up till now. Version 7th-Sept-2023 is ok but not later versions.

I am now using static build version 28th-November-2023. --enable-libvmaf is part of the build. Using windows. The PATH to model files is D:\RQM\VMAF-models\

The error message is ...

Error applying option 'model_path' to filter 'libvmaf': Option not found
Failed to set value '[0:v]setpts=PTS-STARTPTS[main];[1:v]setpts=PTS-STARTPTS[ref];[main][ref]libvmaf=model_path='D\:\\RQM\\VMAF-models\\VMAF_v0.6.1.json'ool=harmonic_mean:eof_action=endall:n_threads=7' for option 'lavfi': Option not found
Error parsing global options: Option not found

Note that in this post there is a funny character inserted in place of two characters, namely a colon and a p i.e. colonpool. The funny char is not part of syntax.

I thought there was a dedicated ffmpeg forum to post this but it's ffmpegx. Any help with this is greatly appreciated, thanks.

The syntax I am using still works fine for ffmeg builds prior to and including 7th-Sept-2023.

The full syntax I am using is ... for FHD
ffmpeg -i %1 -i %_REFERENCE_FILE% -lavfi "[0:v]setpts=PTS-STARTPTS[main];[1:v]setpts=PTS-STARTPTS[ref];[main][ref]libvmaf=model_path='D\:\\RQM\\VMAF-models\\VMAF_v0.6.1.json'ool=harmonic_mean:eof_action=endall:n_threads=7" 2>"ffmpeg VMAF.txt" -f null -

for 4K ...
ffmpeg -i %1 -i %_REFERENCE_FILE% -lavfi "[0:v]setpts=PTS-STARTPTS[main];[1:v]setpts=PTS-STARTPTS[ref];[main][ref]libvmaf=model_path='D\:\\RQM\\VMAF-models\\vmaf_4k_v0.6.1.json'ool=harmonic_mean:eof_action=endall:n_threads=7" 2>"ffmpeg VMAF.txt" -f null -

Hi, if no one can help from here, there is an Kiwi Web IRC Chat avalible for FFMpeg! (https://kiwiirc.com/nextclient/irc.libera.chat/?channels=#ffmpeg,#ffmpeg-devel), From that link you can just add any nickname to join quickly. If you wish to not join the developer channel simply remove ",#ffmpeg-devel" from the link!

[JN-]

Thanks.