[FFmpeg-user] -pix_fmt + pixel format conversions
My input file is yuvj420p(pc, bt709). My target output is yuv420p(tv, bt709). I would like to use "-pix_fmt +yuv420p" to specify the output format, and to force me to be explicit in my conversions in the filtergraph. How do I achieve explicit conversions? The format filter appears to trigger implicit conversions. "crop=2704:1520:0:0,format=yuv420p,eq=saturation=1.2" causes error The filters 'Parsed_crop_0' and 'Parsed_format_1' do not have a common format and automatic conversion is disabled. If I go back to relying on implicit conversions, how do I output these automatically added filters? ffmpeg version 4.4-essentials_build-www.gyan.dev on Windows 10 ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] -pix_fmt + pixel format conversions
Am 29.07.2021 um 09:12 schrieb Green Koopa: My input file is yuvj420p(pc, bt709). My target output is yuv420p(tv, bt709). I would like to use "-pix_fmt +yuv420p" to specify the output format, and to force me to be explicit in my conversions in the filtergraph. How do I achieve explicit conversions? The format filter appears to trigger implicit conversions. "crop=2704:1520:0:0,format=yuv420p,eq=saturation=1.2" causes error The filters 'Parsed_crop_0' and 'Parsed_format_1' do not have a common format and automatic conversion is disabled. If I go back to relying on implicit conversions, how do I output these automatically added filters? Add "-v verbose" to your command line and then search for the green lines in the console listing. Michael ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] -pix_fmt + pixel format conversions
Green Koopa (12021-07-29): > My input file is yuvj420p(pc, bt709). My target output is > yuv420p(tv, bt709). I would like to use "-pix_fmt +yuv420p" > to specify the output format, and to force me to be explicit > in my conversions in the filtergraph. How do I achieve > explicit conversions? The format filter appears to trigger > implicit conversions. The format filter does not do the conversions, it only forces the format at a certain point in the filter graph. The standard filter for converting between pixel formats is scale. In certain cases, I hear zscale can be more suited, but I never looked at the specifics. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] -pix_fmt + pixel format conversions
Nicolas George (2021-07-29): > > Green Koopa (12021-07-29): > > My input file is yuvj420p(pc, bt709). My target output is > > yuv420p(tv, bt709). I would like to use "-pix_fmt +yuv420p" > > to specify the output format, and to force me to be explicit > > in my conversions in the filtergraph. How do I achieve > > explicit conversions? The format filter appears to trigger > > implicit conversions. > > The format filter does not do the conversions, it only forces the format > at a certain point in the filter graph. > > The standard filter for converting between pixel formats is scale. In > certain cases, I hear zscale can be more suited, but I never looked at > the specifics. > > Regards, > > -- > Nicolas George > Thank you, that helps my understanding. Is there a way to know what pix_fmts each filter can accept? ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] -pix_fmt + pixel format conversions
Green Koopa (12021-07-30): > Thank you, that helps my understanding. Is there a way to know what > pix_fmts each filter can accept? Unfortunately, nothing public, unless I am mistaken. If you have a build tree, you can try running the filtfmts tests, and then re-run the test program directly to see its output. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
