nwg
3rd June 2009, 17:26
So that's it! I've been pulling my hair out all week trying to figure out why my Sony BDP-S350 was having a hard time fast-forwarding, rewinding, and chapter-jumping certain downloaded AVCHDs/BD9s. I would've assumed it was just a limitation of the player, but some other discs scanning just fine. I tried using FixClpi, remuxing with TSRemux, using h264info to write PPS... nothing worked to improve scanning or chapter response. Finally, I stumbled onto a couple of very interesting links in addition to this one:
http://forum.handbrake.fr/viewtopic.php?f=14&t=6346
http://forum.doom9.org/showthread.php?t=136327&highlight=keyint
I downloaded MediaInfo and compared slow AVCHDs vs. fast ones, and guess what? The keyints were vastly different. A fast disc would have a typical keyint of 24 and a minimum of 2, whereas a slow disc would have numbers at least 10 times that size (eg. 240/24). According to the above second link, MeGUI's "SA-Blu-ray" profile defaults to low keyint numbers, which in turn leads towards a smoother scanning & chapter jumping experience. I wish people would use that profile more often. I know it could potentially result in a small sacrifice in video quality, but I would prefer to have the same smooth scanning capabilities as an actual Blu-ray Disc.
Thanks guys! I can sleep again. :p
Visor
I have been getting the same thing happen with ripbot BD structures on my S350. I too thought it was the S350 causing it. I downloaded mediainfo and loaded a ripbot example in it. It is Keyint= 250 keyint_min =25. RB Builder files are ok and ff/rw as they should.
Anyway to change this without have to reencode.
http://forum.handbrake.fr/viewtopic.php?f=14&t=6346
http://forum.doom9.org/showthread.php?t=136327&highlight=keyint
I downloaded MediaInfo and compared slow AVCHDs vs. fast ones, and guess what? The keyints were vastly different. A fast disc would have a typical keyint of 24 and a minimum of 2, whereas a slow disc would have numbers at least 10 times that size (eg. 240/24). According to the above second link, MeGUI's "SA-Blu-ray" profile defaults to low keyint numbers, which in turn leads towards a smoother scanning & chapter jumping experience. I wish people would use that profile more often. I know it could potentially result in a small sacrifice in video quality, but I would prefer to have the same smooth scanning capabilities as an actual Blu-ray Disc.
Thanks guys! I can sleep again. :p
Visor
I have been getting the same thing happen with ripbot BD structures on my S350. I too thought it was the S350 causing it. I downloaded mediainfo and loaded a ripbot example in it. It is Keyint= 250 keyint_min =25. RB Builder files are ok and ff/rw as they should.
Anyway to change this without have to reencode.