Video Compression - Size vs. Quality
All the tests are done with Handbrake.
For more info see the Shrink you video files post.
Let us see how we can get the smallest file size with the quality you want.
I did some testing with several blue ray disks.
RF 28 did show some slight problems with compression artifacts in dark areas RF 25 has less.
The Die Hard 132 minutes long movie
with RF 28 @ 482 Kbps encoded and Dolby Pro Logic II @ 160 Kbps resulted for the 720p version in a tiny 611 Mb file. Acceptable quality and a 2 hour 720p movie on a CD size - I am impressed.
As always, click on the pictures for the full size screen grabs.
the back of the dark suit is where the compression artifacts did show a bit
in this bright scene every thing looks good to my eye
with RF 25 @ 750 Kbps encoded and Dolby Pro Logic II @ 160 Kbps resulted for the 720p version in a still tiny 865 Mb file.
with RF 20 @ 2046 Kbps encoded and Dolby Pro Logic II @ 160 Kbps resulted for the 720p version in a 2040 Mb file.
still not gone completely
Overview Compression, Size and Time
Audio 2=Dolby II @ 160 - 6=6 Channel @ 384 - 6p=6 Channel AC3 Passthru
nt = not tested
the first 60 seconds from Serenity @ 720
RF - MB - sec - Audio - Profile - Comments
20 - 25.1 - nt - 6+6p - high
20 - 23.5 - 195 - 2+6p - high
20 - 21.8 - 195 - 6 - high
20 - 20.2 - nt - 2 - high
20 - 19.5 - 105 - 2 - normal
21 - 17.4 - nt - 2 - high
22 - 14.9 - nt - 2 - high
23 - 14.4 - 177 - 6 - high
23 - 13.9 - 158 - 6 - normal
23 - 12.8 - nt - 2 - high
23 - 12.2 - 95 - 2 - normal
24 - 11.0 - nt - 2 - high
25 - 12.8 - 164 - 2+6p - high
25 - 11.1 - 164 - 6 - high
25 - 10.8 - 94 - 6 - normal
25 - 9.5 - nt - 2 - high
25 - 9.1 - 90 - 2 - normal
26 - 8.3 - nt - 2 - high
27 - 7.3 - nt - 2 - high
28 - 6.5 - nt - 2 - high
29 - 5.9 - nt - 2 - high
30 - 5.3 - nt - 2 - high
the first 60 seconds from the 6th day @ 1080
the 1080 screen shots are cropped because Blogger has a maximum image size of 1600
RF - MB - sec - Audio - Profile - Comments
23 - 15.3 - 285 - 6 - high - 1080
23 - 12.0 - 140 - 6 - normal - 1080
23 - 8.4 - 170 - 6 - high - resized to 720
23 - 6.1 - 81 - 2 - normal - resized to 720
With this work I have done, it should be pretty easy now for you to have an idea what compression to choose.
No comments:
Post a Comment