x264 settings/AVCHD

[soneca]

Is that really there is any difference in compatibility between 4.0 and 4.1(bd) levels because usually both play without problems.
What is necessary to limit/explicit when using the preset slow or slower to create an AVCHD disc.
A while I do my backups without any problems but as space is limited from time to time even in dvd9, I want to make the best possible quality.
What do you think of these settings to 720p?
--preset slow --bluray-compat? --level 4.0 --keyint 24 --min-keyint 1 --ipratio 1.2 --vbv-bufsize 25000 --vbv-maxrate 25000 --me umh --b-adapt 2 --subme 8? --ref 6 --bframes 3 --pic-struct --no-dct-decimate

Thanks you guys.

[johns0]

http://forums.afterdawn.com/t.cfm/f-200/4_0_or_4_1_profile-808107/

[soneca]

johns0,

Thanks for the reply, but this difference between the levels used in the profiles I know well. I want to know is the compatibility in practice.

[poisondeathray]

What do you think of these settings to 720p?
--preset slow --bluray-compat? --level 4.0 --keyint 24 --min-keyint 1 --ipratio 1.2 --vbv-bufsize 25000 --vbv-maxrate 25000 --me umh --b-adapt 2 --subme 8? --ref 6 --bframes 3 --pic-struct --no-dct-decimate

I want to know is the compatibility in practice.

You should keep --bluray-compat , but subme doesn't affect compatiblity, so you can use whatever


For BD media, --vbv-maxrate 24000 --vbv-bufsize 30000

But for DVD media that is not safe. While many players will play it, some older players , and cheap players will stutter with buffer overruns . The recommendation for DVD media is --vbv-maxrate 15000 --vbv-bufsize 15000 , but BD rebuilder uses --vbv-maxrate 17500 --vbv-bufsize 14500

See this
http://forum.doom9.org/showthread.php?t=154533

[soneca]

Thanks poisondeathray!

You should keep --bluray-compat , but subme doesn't affect compatiblity, so you can use whatever

Although subme 8 is already implied in the preset slow.

But for DVD media that is not safe. While many players will play it, some older players , and cheap players will stutter with buffer overruns .

That's right, but they are playing well with those values.

In the latest versions jdobbs decreased the value of the VBV-busize to 13000 and vbv-maxrate to 15000.

The parameters colorprim, transfer and colormatrix" make a difference in AVCHD?

Thanks!

[poisondeathray]

Thanks poisondeathray!

You should keep --bluray-compat , but subme doesn't affect compatiblity, so you can use whatever

Although subme 8 is already implied in the preset slow.

But for DVD media that is not safe. While many players will play it, some older players , and cheap players will stutter with buffer overruns .

That's right, but they are playing well with those values.

In the latest versions jdobbs decreased the value of the VBV-busize to 13000 and vbv-maxrate to 15000.

The parameters colorprim, transfer and colormatrix" make a difference in AVCHD?

Thanks!

Subme doesn't affect compatibility - so you can set in 9 or 10 if you want (a lot slower, might not be worth it)

Many players will play higher for VBV, but if you want safe for compatibility, I would use 15000 for both. Or if you know what your player is capable of, and only care about that, set it to whatever suits your player. I don't know why jdobbs decreased bufsize even lower

The other 3 parameters are VUI information only. They are only metadata - it won't affect compatibility. For players that read it (softwaare or hardware), it will provide the correct Rec.709 conversion matrix for display if you flag it with Rec.709 (instead of 601 or something else). It certainly doesn' t hurt to flag it, so you should always include it IMO - so you have a better chance of correct colors on every setup, hardware or software

[soneca]

poisondeathray,

Thanks for the clarification!