If it is lossy, then is there a lossless video compression standard out there that is in common use?
2007-06-27 09:00:46 · 5 answers · asked by footynutguy 4 in Consumer Electronics ➔ Home Theater
Divx is lossy, along with just about every other video codec out there. Raw digital video is HUGE, taking several hundred MB of space per minute.
x.264 is becoming the most common for high quality, efficient endcoding.
A normal DVD movie (6-8gb, MPEG 2) can be reduced in size to 1.4gb while looking indistinguishable from the original using x.264.
x.264 is the current codec pirates are using to make copies of Blu-Ray and HD-DVD rips. Though they downconvert the 1080p original to 720p. They still look great from the sample I've seen.
x.264 is actually based on the h.264 / VC-1 codec that Blu-Ray and HD-DVD use.
The only downside is that it requires a very fast single core or dual core processor to incode/decode.
http://en.wikipedia.org/wiki/X.264
http://en.wikipedia.org/wiki/H.264
http://en.wikipedia.org/wiki/MPEG-4
2007-06-27 18:08:27 · answer #1 · answered by Anonymous · 1⤊ 0⤋
The current version of the DivX codec uses lossy MPEG-4 Part 2 compression and is outperformed by the newer H.264/MPEG-4 AVC and VC-1 codecs.
"H.264" (ITU-T) also referred to as "MPEG-4 AVC" (ISO/IEC MPEG) as well as MPEG-4 Part 10, ISO/IEC 14496-10, or AVC (Advanced Video Coding,) is an ALTERNATIVE to VC-1 (aka SMPTE 421M.) ITU-T H.264 does provide for limited lossless (inter-frame) coding when using the "High 4:4:4 Predictive Profile" (aka Hi444PP.)
Wavelet-based "Motion JPEG 2000" supports both lossless and lossy compression coding and currently is Digital Cinema Initiatives' preferred compression technology for "digital film" data compression applications.
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2007-06-28 07:02:48 · answer #2 · answered by ? 5 · 2⤊ 0⤋
A good solution is KLite Codec Pack, a collection of audio/video codecs. I fixed my issues with videos and audios with this package. Free Download here http://bit.ly/1uEeY0p
2014-08-31 07:56:51 · answer #3 · answered by ? 2 · 0⤊ 0⤋
when compressing from 4.5 gb to 700 mb the average loss in quality is about 30%
2007-06-28 02:02:59 · answer #4 · answered by Preet 2 · 1⤊ 0⤋
No its the best compression to shrink a size of a 4.7gig film
If u do it properly theres only the slightist loss in quality
Check out
www.vcdhelp.com for more info
2007-06-27 16:12:08 · answer #5 · answered by Anonymous · 0⤊ 2⤋