[FFmpeg-user] DV to SD Blu-ray
adf.lists at gmail.com
Fri Jan 20 20:34:40 EET 2017
Terje J. Hanssen wrote:
> Hi List,
> I'm a new user here and want suggestions for "best" ffmpeg syntax to
> transcode PAL 576i DV source files to compliant SD-BD_x264m2ts and/or
> The AVCHD-SD specification is possibly something that could be used
> My purpose is to
> - archive this on 25GB-50GB BD-R discs in an suited format for future
> - keep the source quality at relative high bit-rate (i.e AVC at 15 Mbps
> or MPEG-2 (I-frame?) at 25 Mbps)
> - playback compliance with BD-players.
> - keep by copy the DV LPCM audio if possible.
Working with interlaced content can be tricky, keep your masters even
if you think the blu-rays are OK at first sight.
> The closest samples as references I've found for encoding Blu-ray are
> 1) with x264 (video only)
Which does do an interlaced encode - but tff.
It's possible DV is bff so you would need to check what your content is.
> 2) with ffmpeg
Not suitable for interlaced content.
> I want suggestions how to possibly "merge" relevant parameters from 1)
> x264 into 2) ffmpeg syntax ?
ffmpeg can use -x264-params tp pass things to libx264 just an example
pasted from old notes which doesn't mean it's correct and of course it's
for 709HD content with abnormally low bitrate.
-vcodec libx264 -b:v 10000k -preset veryslow -tune film -level 4.1
> 3) As a first attempt I tried to apply 2) mostly as is, but didn't
> succeed to get LPCM audio copied:
> ffplay and VLC can playback the out video file SD-BD_x264.m2ts without
As lpcm doesn't work maybe truehd? ISTR there was a gsoc project to encode.
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