Hi,

> ffmpeg -y -hide_banner -threads 8 -hwaccel nvdec -hwaccel_output_format cuda 
> -i Saving Mr Banks (2013).mkv -vf scale_cuda=-1:720 -c:v h264_nvenc -rc 
> vbr_hq -profile:v main -minrate 1500k -maxrate 4M -bufsize 5M -acodec ac3 -ac 
> 6 -strict experimental -ar 48000 -b:a 640k -preset slow -flags +loop -cmp 
> chroma -subq 6 -me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 
> 0.71 -b_strategy 1 -map 0:v -map 0:m:language:ita -metadata title=Saving Mr 
> Banks (2013) -metadata description=Films -metadata comment=Films 
> ../Films-720p/Saving Mr Banks (2013).mp4

> Automatic encoder selection failed for output stream #0:2. Default encoder 
> for format mp4 (codec none) is probably disabled. Please choose an encoder 
> manually.
> Error selecting an encoder for stream 0:2

I'm thinking you end up needing to specify an encoder explicitly for stream 
number 2, since it’s selected by metadata, any stream could be tagged Italian.


Regards,
Ted Park

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