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0
votes
1answer
387 views

Improve ffmpeg command for MKV to MP4 for iPad?

I have many MKVs made from DVDs and BRs by MakeMKV that I converting to MP4 so I can play/stream on my iPad Air. I now use this command for converting my MKVs to MP4: ffmpeg -i input.mkv -strict ...
1
vote
1answer
3k views

ffmpeg: Converting MKV to MP4 lossless

I'm new to ffmpeg (windows), and need some help. I want to convert my MKVs to MP4 with as little loss in quality as possible. The MKVs are made with makemkv, and contains among others DTS soundtrack. ...
0
votes
0answers
214 views

Dolby Digital Live vs DTS Connect Analysis

Has anyone perfomed a proper analysis of these two? As in compressed a lossless source with each, decoded it and compared the output bit for bit to the original? I'm unable to make out any difference ...
0
votes
1answer
111 views

Convert shn to flac with one command in CLI?

Everywhere I've googled they always convert shn to wav, and then to flac. It's really uncomfortable. How can I convert shn to flac withing one line?
2
votes
1answer
2k views

Converting RGB images into lossless video with avconv / ffmpeg

I am trying to convert a series of PNG24 images containing a screen animation to a lossless video, so that every pixel is reproduced exactly as it was in the original. But avconv (and ffmpeg) both ...
10
votes
4answers
10k views

What is the difference between WAV and FLAC?

My understanding is that the wav and flac formats are containers for lossless audio. I have seen the flac format as being perhaps better because it is able to losslessly compress audio from say a wav ...
3
votes
3answers
761 views

How to apply audio track to a mute h264/mp4-video losslessly?

I have a MP4/h.264-video with no sound. With ffmpeg or similar, how can I apply an audio track to that MP4-file without degrading the quality of the video (i.e. without recoding the video-track)? I'd ...
5
votes
1answer
437 views

How do I achieve lossless JPEG joining without truncation of partial MCUs?

I am working on a project for which I need to join thousands of JPEG images losslessly (I'm not talking about the Lossless JPEG/JPEG 2000/JPEG-LS formats here). Aforementioned images have varying ...
4
votes
2answers
320 views

What are the basic components of an “audiophile” PC? [closed]

For the purpose of listening to lossless files (i.e., FLAC), is it simply a high quality sound card + high quality speaker?
9
votes
1answer
2k views

Understanding conversion and (de)compression of lossless audio

I have a few questions concerning lossless audio. I'm considering ripping my entire music collection to lossless .flac, but I want to understand a few things about it first. If I have a file that is ...
1
vote
2answers
299 views

AAC 256kbit to MP3 320kbit conversion. I know it's lossy, but how?

Has anyone ever transcoded music from a high-quality aac to an mp3 (or vice-versa). The internet is full of people who say this should never be done, but apart from the theoretical standpoint that you ...
1
vote
1answer
78 views

Is there a compression method for compressing a group of very similar files, without archiving them?

I want to compress a large nuber of files that have near identical headers, and also some data, however I do not wish to archive them, nor do I wish to zip them individually(because the copression ...
2
votes
3answers
2k views

What constitues 24-bit FLAC?

I know there is 16-bit, then there is 24-bit. Now I know 24-bit is higher quality, but is there a difference is kbps or what?
9
votes
2answers
4k views

Lossless extraction of streams from WebM

I would like to extract streams from WebM video files without converting them (re-compression), can somebody recommend any software that can allow this?
1
vote
2answers
1k views

lossless PNG to video in Imagemagick

As an intermediate step in creating an animation, I need to put a bunch of sequential PNGs into a movie file. I tried ffmpeg but was getting compression and artifacting even when I set quality to ...
4
votes
1answer
13k views

Is there any quality difference between PNG vs BMP image formats?

I have just learned that PNG is a lossless image format while BMP can be both uncompressed or lossless format. Should there be a quality difference between these two? If not, does it mean that other ...
0
votes
1answer
2k views

Sound out of sync after merging multiple mp4 files with Avidemux

I am trying to join (merge) two or more .mp4 files together, without re-encoding. Here is what I did: Started Avidemux 2.5.5. With File->Open, selected Input1.mp4. I received this message - "H.264 ...
8
votes
1answer
10k views

Possible to rotate video (.MOV/H.264/AVC) losslessly?

The iPhone (3GS, 4, 4S, etc) often records video upside-down but then includes metadata about the rotation inside the MOV container. However, many applications (XBMC, VLC, Windows Media Player) do ...
2
votes
3answers
2k views

Lossless rotation of photos using Windows Photo Viewer? (XP vs Win7)

If I wanted to rotate photos in XP using Windows Photo Viewer I was told, that it wasn't lossless rotation (so, worse quality in the rotated photo). What about Win7 and Windows Photo Viewer? Is it ...
0
votes
1answer
309 views

Importing WAV CDs into iTunes without conversion

I would like to import some audio CDs into iTunes, keeping their Audio CD (WAV) format because they had been previously burned from MP3s, so they don't lose too much quality. How can I do this?
5
votes
3answers
8k views

How to adjust .mkv files audio volume level?

I have a bunch of .mkv video files which audio is REALLY low volume. How can i adjust the volume higher permanently in the .mkv file? preferrably with lossless methods (if even possible?). Yes, i ...
8
votes
5answers
2k views

OS X: How to perform a lossless crop of a JPEG image?

I'm looking for a simple way to losslessly crop JPEGs on OS X. Particularly, is there some way to get Preview to perform a lossless crop?
2
votes
1answer
6k views

How to check if a FLAC file was made from MP3? [duplicate]

Possible Duplicate: Finding out if a FLAC or WAVPACK audio file is NOT originally encoded from a lossy source Sometimes I doubt that FLAC files are made from original music, because of ...
0
votes
0answers
624 views

How to Play 24 bit flac on iTunes? [duplicate]

Possible Duplicate: Flac files on iTunes I have flac files, which are 24 bit. I have tried to convert them to MPEG-4 Audio (Apple lossless), using Max (on Mac OS 10.6.4), but it let me ...
7
votes
3answers
4k views

Finding out if a FLAC or WAVPACK audio file is NOT originally encoded from a lossy source

Is there a way of checking that the so-called FLAC or WAVPACK audio file was originally encoded from a lossless source (WAV, CDA, APE, etc.) instead of a lossy source (MP3, AAC, ATRAC, etc.)? Say I ...
4
votes
8answers
2k views

Lossless DVD to avi?

I'm looking for a free or GPL program to rip DVDs to avi. I have AutoGK, but that only makes a compressed DVD. I want full quality, filesize be damned!