Using FFMPEG to encode to Blu-ray format

lyinawake · 25th March 2014, 18:59

Hello,

I have been tearing my hair out trying to find the optimal way to encode an already x264 compressed 720p29.97 video file into a Bluray compatible format using ffmpeg. There are lots of resources for using the stand-alone x264.exe, but I want to retain the audio track in my file, so I believe ffmpeg would be the best way to go (please correct me if I'm wrong).

Ideally I would like to use ffmpeg so that I can also use the libfdk_aac audio encoder. Here is the command that I have built from various resources including the sticky at the top of this forum:

ffmpeg -i [filein] -c:v libx264 -level:v 4.1 -preset veryslow -tune film -crf 16 -r 59.94 -x264opts bluray-compat=1:weightp=0:bframes=3:ref=3:nal-hrd=vbr:vbv-maxrate=40000:vbv-bufsize=30000:keyint=60:b-pyramid=strict:slices=4:tff=1:aud=1:colorprim=bt709:transfer=bt709:colormatrix=bt709:sar=1/1 -c:a copy [fileout]

I am comparing the output of this command with that of multiAVCHD's built-in transcoding and have found the quality of the multiAVHCD built-in transcoding noticably better. However, I would like to do this through the command line instead of GUI so I can automate.

Could anyone please review my ffmpeg command and indicate why I am not able to get the same quality as I can with the multiAVHCD transcode process? I know that multiAVHCD uses AVISynth scripts, but shouldn't I be able to achieve the same thing with the ffmpeg cli?

I also need to use ffmpeg to create a letterboxed DVD-format of the same file. I honestly haven't spent a lot of time on figuring out how to crop/resize appropriately and whether anything besides the "target ntsc-dvd" flag is required for compatibility, but if someone has the command line handy for it I'd really appreciate that.

Thank you!

25th March 2014, 18:59	#1 \| Link
lyinawake Registered User Join Date: Mar 2014 Posts: 14	Using FFMPEG to encode to Blu-ray format Hello, I have been tearing my hair out trying to find the optimal way to encode an already x264 compressed 720p29.97 video file into a Bluray compatible format using ffmpeg. There are lots of resources for using the stand-alone x264.exe, but I want to retain the audio track in my file, so I believe ffmpeg would be the best way to go (please correct me if I'm wrong). Ideally I would like to use ffmpeg so that I can also use the libfdk_aac audio encoder. Here is the command that I have built from various resources including the sticky at the top of this forum: ffmpeg -i [filein] -c:v libx264 -level:v 4.1 -preset veryslow -tune film -crf 16 -r 59.94 -x264opts bluray-compat=1:weightp=0:bframes=3:ref=3:nal-hrd=vbr:vbv-maxrate=40000:vbv-bufsize=30000:keyint=60:b-pyramid=strict:slices=4:tff=1:aud=1:colorprim=bt709:transfer=bt709:colormatrix=bt709:sar=1/1 -c:a copy [fileout] I am comparing the output of this command with that of multiAVCHD's built-in transcoding and have found the quality of the multiAVHCD built-in transcoding noticably better. However, I would like to do this through the command line instead of GUI so I can automate. Could anyone please review my ffmpeg command and indicate why I am not able to get the same quality as I can with the multiAVHCD transcode process? I know that multiAVHCD uses AVISynth scripts, but shouldn't I be able to achieve the same thing with the ffmpeg cli? I also need to use ffmpeg to create a letterboxed DVD-format of the same file. I honestly haven't spent a lot of time on figuring out how to crop/resize appropriately and whether anything besides the "target ntsc-dvd" flag is required for compatibility, but if someone has the command line handy for it I'd really appreciate that. Thank you!