I'm using this below MeGui command line to convert my vido files to h264 mp4:
program --level 4.1 --bluray-compat --preset veryslow --tune film --pass 2 --bitrate 6000 --stats ".stats" --open-gop --b-adapt 1 --ref 4 --slices 4 --vbv-bufsize 14000 --vbv-maxrate 14000 --subme 9 --no-fast-pskip --tff --colorprim bt709 --transfer bt709 --colormatrix bt709 --pulldown 32 --min-keyint 25 --sar 1:1 --output "output" "input"
But I'm having problems in making the GOP settings to work & coz of that I'm having trouble in seeking/skipping the converted video file. So i would really appreciate if someone could give me the FFMPEG version of the above command line of MeGui, coz I'm quite baffled with FFmpeg's script. Please help.
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Example bellow (you need to modify and maybe add few things if you insist to use some settings):
Code:@SET x264opts="crf=20:vbv_maxrate=62500:vbv_bufsize=62500:level=4.1:keyint=250:cabac=1:threads=auto:sliced_threads=0:slices=-1:no_psnr=1:no_ssim=1:bluray_compat=1:open-gop=0:pic_struct=1:aud=1:nal_hrd=vbr:force_cfr=1:colorprim=bt709:transfer=bt709:colormatrix=bt709:fullrange=off" @ffmpeg.exe -y -hide_banner -loglevel 8 -stats -i "%1" -c:v libx264 -preset veryslow -tune film -profile:v high -level:v 4.1 -x264opts %x264opts% -x264-params %x264opts% -c:a copy -movflags faststart -y -f mp4 "%~n1_.mp4"
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Even if you translated those to ffmpeg libx264 it would give you problems. Many of your settings are conflicting or don't make sense
--pulldown 32 isn't supported by some muxers , that could be the cause of skipping. Why would you need 3:2 pulldown anyways when native progressive is supported by BD, unlesss this is for SD encode ? And if it's for SD encode - you wouldn't flag it with bt709.
If this is for BD compatibility (why else would you use --bluray-compat?) , you still need to specify --keyint (max keyframe interval) it's not inclued in --bluray-compat switch. For "24p" a 1 sec GOP is --keyint 24 , so you wouldn't use --min-keyint 25. But you are using 2sec GOP settings (VBV <15,000) so you're allowed to use --keyint 48 -
ok forget the above command
please give a ffmpeg script for this below command
program --level 4.1 --preset veryslow --tune film --pass 2 --bitrate 6000 --stats ".stats" --bframes 3 --b-adapt 1 --b-pyramid strict --ref 4 --weightp 1 --vbv-bufsize 14500 --vbv-maxrate 14000 --subme 9 --psy-rd 1.0:0.00 --no-fast-pskip --tff --pulldown 32 --sar 1:1 --output "output" "input" -
If you used those new settings and still have problems, translating them to ffmpeg won't help. libx264 is based on the same library
Very likely the --pulldown 32 is your problem. For progressive video, you should be removing the pulldown before encoding, not adding it back
And the most common problem for device seeking is a very long GOP interval . lower the --keyint value
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