I wanna grab a few BluRay movie ISOs I have and convert to a video file format that is also lostless but smaller.
ISOs are way too large.
I got the same movie encoded into mp4 and the image quality was just huge, mp4 looks like garbage.
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>lostless but smaller.
lol
Video is not like audio
>I wanna grab a few BluRay movie ISOs I have and convert to a video file format that is also lostless but smaller.
Impossible. The source is already lossy. What you CAN do is extract the MPEG-2 Transport Stream from the disc. It will be large (think at least 20 GB), but it will be the best copy you can possibly get, unless you can somehow grab a DCP from the production studio itself (even then, it's still a lossy source, just with much less compression than the bluray).
So much words said and you still can't answer OP's question. Fricking useless Black person cattle zoomers.
This isn't a tech support board.
Its just a reply all fsg ignore it
>every question I can't answer is "tech support"
Useless Black person cattle zoomers
You will NEVER belong here no matter how meme words you can manage to fit in one post
>zoomers
Cancerous subhuman
>BluRay
>MPEG-2
yes, mpeg-2 transport stream, that's what he said, what abou it?
>I got the same movie encoded into mp4 and the image quality was just huge, mp4 looks like garbage.
MP4 is a container format you moron.
probably means h264 or hevc
>implying blurays and music CDs are lossless
man these iJeets need to go back
FLAC is lossless compressed audio, the CD itself is just the media format it never claimed to be lossless since its not a stand in for any other media format.
Video doesn't compress the way OP thinks it does.
Redbook CD audio is lossless, yes.
>inb4 muh steps
>implying the digital master that is the basis of all CDs is lossless
Yes it is.
the master copy is not lossless or identical to the original recording, and even if it was there is a loss of data when they format it for CDs. Most streaming services and CDs these days use versions formatted for youtube and radio.
By this standard nothing is ever "lossless."
moron
>he doesn't know most major codecs have a lossless mode
includes h264, hevc, av1
here's your flac
Idk, store it in a zip or something
>Lossless on digital
LMAO!!!!
Only vinyl is trully lossless.
you are exceptionally simple minded
>he doesn't watch his movies in 16-bit TIFF stacks
find a CRF value you find acceptable. use handbrake if you don't want to meddle with ffmpeg on the cli
>If you're looking for an output that is roughly "visually lossless" but not technically lossless, use a -crf value of around 17 or 18 (you'll have to experiment to see which value is acceptable for you). It will likely be indistinguishable from the source and not result in a huge, possibly incompatible file like true lossless mode.
https://trac.ffmpeg.org/wiki/Encode/H.264
You will never have access to the original quality video files. Even employees who work with systems that process those files don't typically get direct access to the original files.
mkv
is just a container and has no relevance to encoding quality
irrelevant to question in OP. can you read?
same as above.
now we wait for the seethe
>irrelevant to question in OP. can you read?
It's very relevant. They want the lossless video, which they will never obtain, as I stated in my comment.
so you can't read got it.
flacs are much smaller than cd's because cd's are uncompressed, so there's a lot to gain even from lossless coding
bluray videos are already heavily /lossily/ compressed, there's no way to make them smaller by any useful amount without losing more information
to give you an idea, bluray video maxes out at 40Mbit/s, while raw, 1920x1080, 24fps, YUV420P (12 bits per sample) video is 570Mbit/s, this means they already have a pretty substantial 14:1 compression ratio at an absolute minimum (bluray videos don't usually average close to 40Mbit/s)
one place you can potentially find some savings is in the audio, sometimes it's stored uncompressed, but mainly you can save by just deleting duplicate audio tracks (often there will be a "low end" and "high end" copy of the main track, for compatibility purposes, you can delete the lower quality ones without feeling like you've lost anything)
this has to be bait
eh, i wouldn't be so sure
it's not unreasonable for someone to assume bluray videos aren't compressed, like cd's, especially since there's so much information about how to compress your dvd/bluray movies, they aren't always so specific as to say recompress or transcode
one might also be aware of it and still think that because bluray is so old that there may be a lossless codec more efficient than the original lossy codec (there isn't)
it's a complex topic, and it's obvious he doesn't know anything about digital video, since he calls mp4 lower quality than bluray, which makes no sense considering an mp4 file can contain a remuxed bluray video stream, so can be exactly the same quality
By the time they have put it in BluRay, it already went from film stock or RAW to MOV or MXF, into whatever container they put for blu-ray. this is why Criterion can charge so much for movies they get the film stock to because they are converting directly from film to RAW and straight to DVD or Blu-Ray.
t. film editor.
>into whatever container they put for blu-ray.
.m2ts (mpeg-2 transport stream)