Is the Blu-Ray video format lossless?
The only lossless video formats are RAW formats, typically different for every camera. No consumer storage medium is lossless. The HDMI format is capable of streaming a lossless signal, but that's not a storage medium.RAW digital video is typically measured in GB per minute, which far outstrips any portable storage medium. There are lossless video codecs that can compress up to 1/3 the former file size, but that's still not sufficient. A movie would be around a terebyte.And frankly, video editing doesn't use lossless codecs, for the most part. Apple ProRes 422 is very common and that has the color information significantly compressed. Movie DCP hard drives also don't have a RAW video image for projection on the movie screen.The only place you see RAW formats used is in color correction where the ultimate images is fine tuned into the right artistic expression of that image. Much like what photographers do when they post-process their images.
Is there any benefit of converting a lossy audio file to lossless?
You can in real life applications reverse mp3 compression. It won't be truly lossless like the original source file though. If you have a widely used method of compression you can get near lossless quality under normal circumstances. The sound of decompression will create artifacts that will have to be edited out. Other audio formats are not so lucky though. Mp3 to wav and reverse are most used and are lossy to lossless in reverse. So anything is possible in audio but it's effectiveness and artifacts are it's limitation in use.
How do I make 1.5GB of video file fit into 700MB CD by using lossless video compression software?
A few people have jumped into this and said simply “you can’t”.This is not true. Sampled analog signals of all types can be compressed using lossless methods with some success. A good example is the FLAC audio compressor. When using FLAC on CD-format audio, a good rule of thumb is that you can expect perhaps a 50% reduction in the size of your data, with no loss.There is an inherent problem with lossless compression, however, which is that you can’t make any guarantees about how much it will compress. Give FLAC the right white noise signal as input and you will get no compression whatsoever.Pictures can be compressed pretty well with lossless JPEG, and the same caveats apply - some images will compress pretty well, but others won’t.There are a number of lossless video codecs, and depending on your signal, you will have various amounts of success.List of codecsHowever, just because I said that “you can’t” is not a valid answer does not mean it is not the right answer. Most likely, you are going to fail in your attempt to compress video using lossless compression.The reason for this is that almost all video you will ever work with has already been compressed. That 1.5GB file you are working with has probably been compressed using H.264 or some other high performance video codec. If it was in uncompressed format it would probably be 500 GB. All of the lossless video compressors given above are going to work on uncompressed video, not a signal that has already been compressed.A lossless video codec working on a 500 GB uncompressed file, in say, YUV format, would be able to compress it down quite a bit. But it would not be able to compress 500 GB of uncompressed video anywhere near that 1.5 GB you have in hand. Or at least it is extremely unlikely.To get a good answer to your question instead of the confusion you are getting right now, you need to rephrase it as “I have a 1.5 GB video file that was compressed using XXX with parameters YYY. Can I compress it further using a lossless codec.”The answer to that is most likely no.
Ho do I crop a video without losing quality or increasing file size?
Technically, the only way to crop a video and not lose quality or increase size is to start with a lossless codec. For example, if your original video is HUFFYUV then you can perform your crop and export to HUFFYUV. You’ll get a smaller file with absolutely no loss in quality.H.264 supports lossless encoding. Run the quality slider all the way to the right (“RF 0”) and Handbrake will create a lossless, H.264 video. However, the file size will be huge and it won’t be easy to find a machine that can play the file. Nonetheless, you could then take that video, crop it and output another lossless video that would have the same quality as the original and would have a smaller file size.If you are starting with video that is encoded with a lossy codec then no, there is absolutely no way to perform any edits on that video without losing quality or increasing the file size.If the destination format is not lossless, there will be a drop in quality (by definition). It doesn’t matter what the source is.If the source is lossy and the destination is lossless, the quality will stay the same but the file size will go up.If the source is lossless and the destination is lossless, the quality will stay the same but the size will go down.
Is there a free Mac OS X app to convert WMA (Windows Media Audio) files to ALAC (Apple Lossless Audio Codec)?
Acting as the WMA Converter for Mac, iDealshare VideoGo can easily convert WMA to Mac more compatible format like convert lossless WMA to Apple Lossless ALAC M4A or convert WMA to AAC, MP3, AIFF or It also helps to convert WMA to other audio format like convert WMA to FLAC, OGG, WAV, AU, RA, MP2, DTS, AC3 and etc on Mac OS X (Mavericks included). Step by step guide at WMA Converter for Mac
Will converting FLAC to ALAC decrease quality?
Pier is somewhat correct. If you are converting from a lossy audio codec like MP3 to another lossy audio codec like M4A, then there will be some type of loss no matter how small. So if you go from a 192kbps MP3 to a 192kbps M4A file, the M4A audio codec will take the remaining audio from the already compressed MP3 and will form a new file from the remaining audio originally not thrown out by the MP3 when it was created from the CD/Studio master. However, lossless audio codecs like Flac and Alac, are completely lossless. (As in they don't throw out any audio to achieve a smaller file size.) Unlike MP3 or M4A, Alac and Flac retain all 100% of the original digital audio from the source material. This is why lossless audio codecs, while still compressed, are still never as compressed as an MP3 or M4A audio file would be. Flac and Alac, will compress audio only up to the point where audio would have to be discarded to create an even smaller file size. MP3 in comparison, will discard audio based on what it thinks humans can't hear. (Perceptual Hearing Theory) Examples:↓ FLAC = Lossless, 1 to 1 copy of original source material. ALAC = Lossless, 1 to 1 copy of original source material. Lossless to Lossless format = Lossless FLAC to MP3(Lossy) = Lossy ALAC to M4A(Lossy) = Lossy FLAC to ALAC = Lossless 1 to 1 quality. Just make sure that when you convert from FLAC to ALAC, that you keep the same audio resolution as the FLAC file. So if your Flac file was originally created from a CD, then you want to make sure that the settings for encoding are set for 16-bit, with a sample rate of 44,100Hz.
What does it mean when im downloading music in FLAC format?
FLAC stands for Free Lossless Audio Codec. Basically MP3 is a lossy compression scheme. That means that when you encode something as an MP3, you lose audio quality. With FLAC, you don't lose any audio quality.