Problems with encoding AVCHD in Vegas 8

[Animy]

Hi,

I'm new to this forum and unfortunately still an amateur when it comes to recording video and encoding it. If possible, I'd really appreciate your help on this issue.

I have a Sony HDR-CX7 camera. I recorded some material on 1440x1080 resolution and used Vegas 8 to render its M2TS files into a DVD quality of MPEG-2 (720x480 29.97FPS).

Sometimes I get a good quality video without any problems (except it's a bit blurry when there's motion, but that's the camera's fault, I guess) and sometimes I get these lines, like interlacing? I don't even know how to call them. I included a sample picture - these lines occur when there's fast movement inside the shot even when the camera is still.

This, however, is not a problem with the camera, the M2TS file is played perfectly fine.
I tried rendering small M2TS files and tried different encodings, but that problem didn't occur in small files for some reason.


Thanks in advance,
Animy.

[edDV]

Hi,

I'm new to this forum and unfortunately still an amateur when it comes to recording video and encoding it. If possible, I'd really appreciate your help on this issue.

I have a Sony HDR-CX7 camera. I recorded some material on 1440x1080 resolution and used Vegas 8 to render its M2TS files into a DVD quality of MPEG-2 (720x480 29.97FPS).

Sometimes I get a good quality video without any problems (except it's a bit blurry when there's motion, but that's the camera's fault, I guess) and sometimes I get these lines, like interlacing? I don't even know how to call them. I included a sample picture - these lines occur when there's fast movement inside the shot even when the camera is still.

This, however, is not a problem with the camera, the M2TS file is played perfectly fine.
I tried rendering small M2TS files and tried different encodings, but that problem didn't occur in small files for some reason.


Thanks in advance,
Animy.

Your picture shows what happens when you resize interlace source directly. There are various techniques. One that I like is AVCHD or HDV 1440x1080i conversion to 1440x1080p @ 59.94 fps (Cineform codec), then resize Cineform to 720x480p @ 59.94, then encode to 720x480i DVD MPeg2.

I have a thread on here somewhere detailing the process.


PS: I see you are in PAL land. Substitute 720x576 in place of 720x480 above. Substitute 50 fps for 59.94.

You can also edit 1440x1080i, then export HD edit master as uncompressed 1440x1080i for 720x576i conversion with avisynth. Then encode to 720x576i DVD MPeg2

[Animy]

Thanks a lot!
I'll try that. Sounds like a lot of Encoding though. hehe.

Well, I bought the camera in the USA, so I guess it's NTSC after all. Isn't it?

[edDV]

Thanks a lot!
I'll try that. Sounds like a lot of Encoding though. hehe.

Well, I bought the camera in the USA, so I guess it's NTSC after all. Isn't it?

Yes it would be unless it says PAL. NTSC to PAL conversion is another story.

[Animy]

Hey,

I used a 4 minute sample and tried encoding it to Cineform 59 FPS 1440x1080 using Vegas 8, but it took a few hours to finish and the result was an 8GB file.

Assuming that the end result will be around 3-4GB at Mpeg-2 720x480 29FPS for an one hour video, which is great, is there really no way around 100 hours of encoding to Cineform 1440x1080 + 100 more hours of encoding to 720x480 Cineform + x hours of encoding to mpeg-2?

There must be something I'm doing wrong here.

Also, the quality doesn't have to be perfect. It should be a DVD-quality, since I reduce the resolution to 720x480 and use the mpeg2 encoding anyway.

[edDV]

I'm not seeing that long for Cineform encoding. I'll try a test later.