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Topics - patrick

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H.264/AVC / 10bit Bug state
« on: October 26, 2011, 02:58:47 AM »
I remember that some months ago I read about a 10-bit color-conversion bug in x264. I've read the changelog, but don't see anything that mentions a fix. Is the bug still there? Exactly when does the bug affect the image? I'm inputing a RAW 8-bit 4:2:0 stream.

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Avisynth Usage / How to remove vertical lines (banding-like)
« on: August 03, 2011, 11:22:43 AM »


As you can see in the screenshot, the video has 2px wide vertical lines. Those lines are static, so temporal filtering is useless.

Right now I'm creating an edge mask to protect the drawing and remove the lines with removegrain and deen. It works OK, but the edge mask doesn't protect low-contrast details (When it does, it detects these vertical lines as edges as well).

Any suggestion about what filter can remove those lines?

3
Software Players / FFDShow with H.264 10bit support
« on: July 14, 2011, 08:08:10 AM »
I searched the web, but had a hard time finding a FFDShow build that supports H.264 10-bit. Finally I found one included in CCCP. I hate codec packs so I decided to replace the files of the default FFDShow Installer with the ones from CCCP. I've only tested it with a single 10-bit file using MPC-HC*, but it worked :D

Download FFDShow rev 3925 with H.264 10-bit support (BETA)
http://www.filesonic.com/file/1444561154/ffdshow_rev3925_20110711-10bit.exe

*if you use MPC-HC, don't forget to deactivate the internal filters.

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H.264/AVC / resize filter sar
« on: June 10, 2011, 09:56:58 AM »
What's the format used for the sar of the resize filter?
from help: resize:[width,height][,sar][,fittobox][,csp][,method]
seems like sar is a single value, so it's a float?

One more thing. Does the --sar width:height argument sets the input sar, and if not resized, the output sar?

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H.264/AVC / VFR Timecodes
« on: June 09, 2011, 03:27:49 AM »
With the recent modifications, x264 takes into account the frame duration when assigning a quantizer. This is great when using FFMS to read video, but not very useful with other inputs (in my case RAW YUV). Is there any patch (patched build) that allows passing a timecode file to the compressor?

6
H.264/AVC / Bug report: RAW video 64-bit
« on: May 11, 2011, 07:15:33 AM »
RAW video input works upto r1924, but after that, it only encodes part of the video.
Tested without arguments, except --input-res, --frames and --output.

Only affects 64-bit builds. 32-bit works fine.

Thread: resolution for raw input not read from file for x64 binary? seems to be related. The x64 build posted by Chikuzen (compiled with gcc4.5.2) works fine.

affects Intel Q6600 (4GB) and Intel i3-380M (4GB), but not Intel i7 920 (12GB) -- all systems use Windows 7.

7
H.264/AVC / zones: bitrate multiplier
« on: October 02, 2010, 11:29:46 AM »
When setting a bitrate multiplier for a zone in a multi-pass conversion, will the bitrate of the rest of the video be lowered or does the overall bitrate increase?

So if I convert --bitrate 1000 and half of the video has b=2.0, will the final bitrate be 1000 or 1500?

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H.264/AVC / x264 bug: chroma-qp-offset
« on: October 02, 2010, 11:25:20 AM »
There's a bug in x264, either in the software or in the helptext. Using the default configuration, chroma-qp-offset is -2 not 0. It used to be 0, and I don't know when it changed, but at this moment it's -2 (even thought the documentation states it's 0).

In case it's an error in the documentation, why did it change?

9
H.264/AVC / x264 filter request: SelectRangeEvery
« on: August 29, 2010, 02:45:44 AM »
x264 has some very useful filters right now, but I'm missing a very easy to implement one: SelectRangeEvery
The behavior I'm looking for is just like the AviSynth version. I use it ofter to test different configurations and to need avisynth in between is annoying, because I'm using a RAW source and I don't have a 64-bit raw source avisynth filter, so i'm forced to use 32-bit x264 :(

Considering that select_every has been implemented, I hope there's a possibility you'll consider implementing SelectRangeEvery as well.

Thanks in advance.

10
H.264/AVC / --slow-firstpass on --pass 3?
« on: December 19, 2009, 04:23:12 PM »
Should I use --slow-firstpass only on the 1st pass, or on the 2nd (--pass 3) as well on a 3-pass encode? Documentation states only 1st pass, but just wanted to confirm. Thanks in advance.

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