[FFmpeg-user] Making length of both videos equal while using chromakey (colorkey )filter.

[Paul B Mahol]

On 3/28/19, Usman Archi <usmanarchi66 at gmail.com> wrote:
> This works.
>
> -y -i (videoPath1) -i (videoPath2) -filter_complex
> [1:v]colorkey=0x00ff00:0.3:0.15[a][ckout];[0:v][a][ckout]overlay[despill];[despill]despill=green[out]
> -map [out] -map 0:a -b 3200000 -s 640:360 -c:a copy (outputPath)
>
> (removed the setpts command and ALL overlay parameters)
>
> This does not work (added both setpts and overlay parameters)
>
> -y -i (videoPath1) -i (videoPath2) -filter_complex
> [1:v]setpts=PTS-32/TB,colorkey=0x00ff00:0.3:0.15[a][ckout];[0:v][a][ckout]overlay=0:0:enable=gte(t\,5):eof_action=pass[despill];[despill]despill=green[out]
> -map [out] -map 0:a -b 3200000 -s 640:360 -c:a copy (outputPath)
>
> This also does not work (removed setpts)
>
> -y -i (videoPath1) -i (videoPath2) -filter_complex
> [1:v]colorkey=0x00ff00:0.3:0.15[a][ckout];[0:v][a][ckout]overlay=0:0:enable=gte(t\,5):eof_action=pass[despill];[despill]despill=green[out]
> -map [out] -map 0:a -b 3200000 -s 640:360 -c:a copy (outputPath)
>
> Neither this (removed overlay parameters)
>
> -y -i (videoPath1) -i (videoPath2) -filter_complex
> [1:v]setpts=PTS-32/TB,colorkey=0x00ff00:0.3:0.15[a][ckout];[0:v][a][ckout]overlay[despill];[despill]despill=green[out]
> -map [out] -map 0:a -b 3200000 -s 640:360 -c:a copy (outputPath)
>
> So any time I add the setpts command OR the overlay parameters, it doesn't
> work.
>
> Are you saying: '[0:v][a][ckout]overlay'  are 3 inputs, and it shouldn't
> work? If yes, then this does work. I can even show you a video of this
> working.

No, it does not work, show when it works!

>
> Any help would be appreciated.
>
> Thanks
>
> On Wed, Mar 27, 2019 at 7:15 PM Nicolas George <george at nsup.org> wrote:
>
>> Usman Archi (12019-03-27):
>> > [0:v][a][ckout]overlay=0:0:enable=gte(t\,5):eof_action=pass[despill]
>>
>> I do not think that overlay can accept three inputs.
>>
>> When you have that kind of error, re-read your filter graph very very
>> carefully. Make a diagram on a blackboard of a piece of paper if need
>> be.
>>
>> Regards,
>>
>> --
>>   Nicolas George
>> _______________________________________________
>> ffmpeg-user mailing list
>> ffmpeg-user at ffmpeg.org
>> https://ffmpeg.org/mailman/listinfo/ffmpeg-user
>>
>> To unsubscribe, visit link above, or email
>> ffmpeg-user-request at ffmpeg.org with subject "unsubscribe".
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> ffmpeg-user-request at ffmpeg.org with subject "unsubscribe".