Question about the vvenc plugins

[Jamaika1]

Struggle with vvc. I have no idea how to make ffmpeg from vvc on 2 x pass at once. I know that can give commands twice. It seems simple but something is missing. I don't know how to initialize the ff_encode_encode_cb function.
MartinEesmaa/FFmpeg-VVC@c75940d

ffmpeg_avx2.exe -y -v verbose -i "input.mp4" -c:v libvvenc -vb 6000k -r 30000/1001 -an -frames:v 100 -movflags faststart -vvenc-params threads=16:_pass=2:_passes=2 -vf scale=1920:1080:in_range=full:_out_range=full,format=yuv420p10le 113.vvc

[libvvenc @ 0000024931628010] libvvenc version: 1.12.1-0f7b70d
[libvvenc @ 0000024931628010] vvenc [notice]: Internal format : 1920x1080 29.97 Hz SDR BT.709
vvenc [notice]: Threads : 16 (parallel frames: 4)
vvenc [notice]: Rate control : VBR 6 Mbps two-pass pass 1/2
vvenc [notice]: Perceptual optimization : Enabled
vvenc [notice]: Intra period (keyframe) : 256
...
[out#0/vvc @ 000002492f4d0910] Starting thread...
RC pass 1/2, analyze poc 31= 0KiB time=N/A bitrate=N/A speed=N/A
...
[libvvenc @ 0000024931628010] libvvenc version: 1.12.1-0f7b70d
[libvvenc @ 0000024931628010] vvenc [notice]: Internal format : 1920x1080 29.97 Hz SDR BT.709
vvenc [notice]: Threads : 16 (parallel frames: 4)
vvenc [notice]: Rate control : VBR 6 Mbps two-pass pass 2/2
vvenc [notice]: Perceptual optimization : Enabled
vvenc [notice]: Intra period (keyframe) : 256
...
Error during encoding

Jamaika1/plugins_ffmpeg701_mingw1150@2cf965a

https://www.sendspace.com/file/ripdsm

[MartinEesmaa]

Hi, @Jamaika1! Sorry for late response.

Anyway... please note you may need to create pass file before encoding.

Example of first pass out of second pass:

ffmpeg_vvceasy -i sample.mp4 -c:v libvvenc -b:v 3000k -pass 1 -an -f null NUL

Second pass out of second pass:

ffmpeg_vvceasy -i sample.mp4 -c:v libvvenc -b:v 3000k -pass 2 -c:a copy encoded.mp4

See information:
https://github.com/fraunhoferhhi/vvenc/wiki/FFmpeg-Integration#vbr-rate-control-variable-bitrate-mode

Also that you inserted -movflags faststart is optional which is only for MP4 muxing.

If you have a question or issue, let me know! Thanks! :)

• Martin Eesmaa