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Sony Vegas Pro 10 Trial. Full HD .m2ts files 16Mb/s bitrate, video pixalated
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Those are compression artifacts. They are virtually impossible to avoid regardless which software you use. When you compress (encode), you will lose detail.
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
But that type quality is unacceptable… How do you render to .m2ts You say you do it often, but that is a very low outcome. Have you watched the video? It looks really bad. The original files are great though. There is no way i will believe it’s impossible to save in .m2ts with a good quality.
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You are re-compressing the video. Something has to go, and it starts with the fine details. In your example, individual leaves are averaged into a larger block of one color to make the file size smaller. This is the compression artifact that you are seeing.
How does Hollywood do it?
They don’t. They start with uncompressed 4:4:4 video and don’t compress it until they make the mpg file for DVD or the m2ts file for BD, but the compression artifacts are in the final product. If you are starting with AVCHD or HDV, you are already starting with compressed video. Heavily compressed in the case of AVCHD.Steve Mann
MannMade Digital Video
http://www.mmdv.com -
So basically i have to put my Sony camcorder to the trash can! There is no way i can edit its .mts files and export them in the same AVCHD format.
Why do i need to export in m2ts? Well i am making a film of 40 mins in length that will be available for download on my site. This film is meant for blu-ray burning with highest quality possible. File size really matters and in m2ts its the smallest. Plus i need this film to be correctly saved with 5.1 surround which i record during my field sound capture. This file needs to beburned to red beam DVD disct in blu-ray format using a free imburn software.
All works perfectly well until i render it, the video outcome is horrible. May be you can give me an advise of an alternative procedure.
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Here is one questionable test i did. I rendered the file 4 times and each additional render didn’t change the quality to worse. In other words, i take the original, render it to m2ts, take what came out and render it again, take this one and render it again and so on 4 times… The quality is the same as the first render. That means that the problem is not compressing 2nd time! What do you think?
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What part of “this is normal” don’t you get?
You will never, with any AVCHD or HDV camera or with any program, encode files without compression artifacts.
Even Hollywood with all their money can’t do it. You can come close by using something like Sorenson Squeeze or Compressor on a Mac. Squeeze will do a little better in the quality, but the operative word is “little”. The encoder in Sony Vegas is among the best, so only you can decide if a fractional better encode is worth the $800 software package?
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
Steven, thank you for your answers about Holliwood but are you the only “Pro” on this forum? As for what part of “this is normal” i don’t get and you do is this: Taken from Wiki “Cyberlink PowerDirector 7 is capable of editing AVCHD natively, without transcoding, intermediate formats or proxy files. Using a patented technique (SVRT), AVCHD clips can be edited and output losslessly to AVCHD or Blu-ray Disc.” You are so sure that there is a huge loss. How can i address this issue to Vegas Pro developers?
In the meantime i will test Cyberlink PowerDirector 7!
Thank you -
This thread is pretty far down the forum list, so the pros aren’t seeing it. Since your description of the problem was quite vague, they may have skipped it. Perhaps if you start a new thread with a different question.
Generally, even Vegas will make BD disks without re-encoding, but you said that you need to make a smaller file, if I recall your original post, and *NO* software can do this without re-compressing the video.
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
Thank you Stephen for your time.
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