Video Quality

[Picaflor Azul]

Hi,

I have been trying to make a dvd out of recordings of my desktop using dvdstyler. I have tried a lot of different things including burning a dvd with 127 minutes and one with around 96 minutes. I can not get a clear video. The commands I am using to capture the video are:


avconv -f x11grab -s hd1080 -r 30 -i 0:0 -f alsa -ac 2 -i pulse recording-filename.mp4
avconv -f x11grab -s hd1080 -r 30 -i 0:0 -acodec pcm_s16le -vcodec libx264 -preset ultrafast -crf 0 -threads 0 -f alsa -ac 2 -i pulse recording-filename.mkv

They both look good when I play back the recording on the computer, but look very blurry when I put them on a dvd and play it on the television.

Thanks in advance.

P. S. The material I am trying to put on a dvd is Zen Cart ecommerce websites, with a lot of text.

[Evil_Burrito]

Use a different program to encode to a dvd compliant mpeg2-ps and then use dvdstyler to author it.

[Nelson37]

Somewhere in the resizing and re-encoding, and also the far-less-crisp display of the typical TV, it degrades. Go figure.

Some information on how these steps were accomplished might be useful.

Keeping the encode progressive may help, using a lower-resolution source display, which will result in larger fonts, may also help.

Have you watched the re-encoded file on the PC?

[Cornucopia]

Yes, starting with an hd source is good for downrezzing smoothness, but gives you a false sense of quality when it is clear that your target must end up as sd and text looks bad in sd if the point size is too low.

Scott

[Picaflor Azul]

Yes, starting with an hd source is good for downrezzing smoothness, but gives you a false sense of quality when it is clear that your target must end up as sd and text looks bad in sd if the point size is too low.

Scott

Thank you all very much for your help. I think these tips will help me get moving again. What is sd?

Thanks again.

[Cornucopia]

HD= High Def (1920x1080, 1280x720)
SD= Standard Def (720x480 or 720x576)

Scott