I'm new to ripping and encoding blu rips and I am seeking some help here:
So I have a couple of h.264 BR rips and I am trying to convert them to mp4. I have ripbot and as I'm speaking one of my rips is in the process of being converted to mp4. I did some searching and so I used media info to get the bitrate info:
so in ripbot I selected the 2 pass option and put in 16,700 for the kbps. So far 5 hours have passed and there's about 8 more until Pass 2 finishes. I realize this is a very long time so my questions were:
1. Did I input too much for the kbps?
2. Setting it as high as I did will I get the exact or close to quality of the actual rip?
3. Did I do this all wrong?
thank you guys
EDIT: My purpose for ripping the exact size of the file to a different container is my own personal preference. I plan on ripping smaller sizes as well just in case anyone was wondering.
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MP4 accepts both AVC/h.264 and AC-3 natively, you don't need to re-encode it, all you have to do is remux it into the new file.
(Only the video from VC-1 Blu ray's can't be transposed into an mp4.)
okay, so I did not need to mess with the constant/2 pass setting at all? Because I was under the impression that if I didn't set it to a particular setting it for the mode and crf it would resize the file automatically because the default settings?
oh nevermind, I see what you mean. Okay, when I have an actual BDrip to convert I may consult this thread again. Thank you!
To just change the container but keep the exact same video and audio you need a program that will allow you to set the video and audio to copy mode. I don't know if ripbot can do that as I don't use it, but AviDemux can.
Just open the video file in AviDemux, leave the video and audio as copy and change the output to the MP4 muxer, then save the file.
hey guys I appreciate the replies. Okay so I have some actual BDrips now around 20-22 gigs each. Using ripbot, I want to make a 1080p version in a smaller size, around 7-10 gb and a 720p size around 4-5 gb. What are the best settings to achieve these while still retaining the most picture quality?
And I would like to ask my initial question again, if I wanted to make an exact copy of the 20 gb file, what would I need to do?
Ripbot, but the general rule of thumb is to pick an appropriate x264 tuning (film, animation etc), the desired CRF value (quality) and use the slowest x264 speed preset you can stand. The default medium speed preset would be fine. You can maybe tweak an encoder setting here and another there for each video but it's extra work and there's no escaping the general rule that higher quality requires a higher bitrate and using a lower CRF value increases the bitrate. I rarely mess around with individual settings myself and just increase or decrease the CRF value if need be.
The difference between CRF and 2 pass encoding isn't how the video is encoded. At the same bitrate the two methods wouldn't look any different, quality wise. 2 pass encoding lets you pick a file size/bitrate and the quality is unknown, CRF lets you pick the quality and the bitrate is unknown. Most people here use CRF even though the file sizes will vary quite a bit, according to how hard each video is to compress. After a while you'll probably settle on a CRF value that gives you a quality you're happy with along with an average file size you're happy with
MKVMergeGUI will open lots of file types and remux as MKV. There's MyMP4BoxGUI for MP4. TSMuxer for TS M2Ts files. Remuxing simply copies the existing video and audio etc and puts them in a new/different container. Each container requires a different amount of overhead so the file sizes might differ a little but remuxing just puts the video and audio etc in a different container so the quality doesn't change.
thanks for the replies. Okay, one more question. Do I just take out the m2ts file out of the stream folder located within the BDMV folder for encoding or do I want to select the entire BDMV folder into whatever encoding program to re-encode?
It depends on how many segments the video is comprised of, and if you want chapters. The chapters and play order originate from the mpls file wheras the m2ts files just contains the video/audio/subtitle streams. If the title is a single m2ts you can extract the chapters from the playlist separately using eac3to, encode the m2ts file by itself and add the chapters later.
Here's the setting I use and generally get good results:
I use Vidcoder, x264 on CRF20 (when I have a 1080p source), encoding speed set on slow, film tune (I usually just modify the "High Profile" preset). For audio I use AAC (FDK) at the #4 quality setting on stereo or Dolby Pro Logic II.
This usually gives me smaller/manageable file sizes and the quality ends up being pretty good. But I also have an i7-4790k and 32GB of RAM so my computer is pretty quick. I can usually pull of ~3hrs on a 2hr long clip.
Whether you use .mkv, .mp4 or .m4v as the container, doesn't matter. .mkv is more forgiving with certain oddball audio types and subtitles.