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Old 27th November 2008, 19:56   #1  |  Link
RadScorpion
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MONOGRAM x264 Encoder

Hello,

after making a set of audio encoders Iíve been trying to focus on video a little bit. Hereís the first tryout of a libx264 based encoder filter. Full source code can be found in the local SVN repository. The encoder filter is released just like the x264 library as GNU GPL.

Features:

* accepts YV12 input frames
* constant QP and average bitrate rate control modes (only 1-pass encoding so far)
* built with support for multiple CPU cores
* easy-to-use presets for encoder options
* support for B-frames - PTS and DTS information can be read by the downstream filter using a custom IMediaSampleEx interface (see source code for more info)

From my initial tests the filter worked quite nicely although I suspect there might be some small memory leaks which showed up after running the debug version of the filter for a few hours. If you find something please do let me know.

Source : mm_x264_1.0.1.0_src.zip (1.7 MB)

Binary : mm_x264_1.0.1.0_bin.zip (341 KB)

Enjoy,

Igor
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Old 27th November 2008, 20:00   #2  |  Link
LoRd_MuldeR
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Where is CRF mode ???
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Old 27th November 2008, 20:02   #3  |  Link
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In the todo list
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Old 27th November 2008, 20:06   #4  |  Link
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Quote:
Originally Posted by RadScorpion View Post
In the todo list
Nice. Leaving the best mode out, would be a bad idea

I just gave your filter a first attempt, but as soon as I try to run the graph, it crashes on me:



Did I use it in the wrong way?
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Old 27th November 2008, 20:09   #5  |  Link
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Hm. I don't think you did. Can you try it without the MKV muxer ?
e.g. FFDShow -> x264 Enc -> FFDshow -> Video Renderer.
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Old 27th November 2008, 20:16   #6  |  Link
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Sorry, I get the same problem:

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Old 27th November 2008, 20:18   #7  |  Link
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Hmm... Could you give me some more info about the file (width, height .... ) or your CPU ?
Have you tried on a different file ?
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Old 27th November 2008, 20:22   #8  |  Link
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Quote:
Originally Posted by RadScorpion View Post
Hmm... Could you give me some more info about the file (width, height .... ) or your CPU ?
Video is 1680x944, a downscaled version of the "Crowdrun" sample. For system details see "My specs" in my signature, please.

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Have you tried on a different file ?
Not yet, but I will do later...
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Old 27th November 2008, 20:28   #9  |  Link
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Your system is basically identical to mine. Would it be possible for you to upload the file for me somewhere ?
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Old 27th November 2008, 20:32   #10  |  Link
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Here you go:
http://www.mediafire.com/?sharekey=a...db6fb9a8902bda

Also tried a 640x480 Xvid clip, no luck either:

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Old 27th November 2008, 20:37   #11  |  Link
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Could you try this build ?

http://blog.monogram.sk/janos/temp/mmx264.ax

I've disabled all SSE stuff.
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Old 27th November 2008, 20:41   #12  |  Link
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Quote:
Originally Posted by RadScorpion View Post
Could you try this build ?

http://blog.monogram.sk/janos/temp/mmx264.ax

I've disabled all SSE stuff.
Same crash message


Here is the debugger output:
Code:
[New thread 2064.0x1068]
[New thread 2064.0x804]
[New thread 2064.0x1320]

Program received signal SIGSEGV, Segmentation fault.
[Switching to thread 2064.0x1320]
0x02da9555 in mmx264!DllCanUnloadNow ()
   from C:\Downloads\mm_x264_1.0.1.0_bin\mmx264.ax
(gdb) bt
#0  0x02da9555 in mmx264!DllCanUnloadNow ()
   from C:\Downloads\mm_x264_1.0.1.0_bin\mmx264.ax
#1  0x02fa7a50 in ?? ()
#2  0x00000009 in ?? ()
#3  0x00000000 in ?? ()
Build obviously has no debugging symbols...
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Last edited by LoRd_MuldeR; 27th November 2008 at 20:45.
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Old 27th November 2008, 20:46   #13  |  Link
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Are you using any special configuration ? Or just the default one that came with the filter. Somehow I can't think of the right spot where the crash could happen :-\
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Old 27th November 2008, 20:47   #14  |  Link
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Quote:
Originally Posted by RadScorpion View Post
Are you using any special configuration ? Or just the default one that came with the filter. Somehow I can't think of the right spot where the crash could happen :-\
I messed with the settings indeed. I will try defaults now...


[EDIT]

Yup, with default settings it won't crash. Now I need to find the setting that causes the crash


[EDIT≤]

As soon as I switch to "CQ" mode and run the graph it will crash!
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Last edited by LoRd_MuldeR; 27th November 2008 at 20:57.
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Old 27th November 2008, 20:47   #15  |  Link
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Do you think you could run a debug build of the filter ?
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Old 27th November 2008, 20:53   #16  |  Link
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Quote:
Originally Posted by RadScorpion View Post
Do you think you could run a debug build of the filter ?
If you give me one, then yes
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Old 27th November 2008, 20:56   #17  |  Link
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Quote:
Originally Posted by LoRd_MuldeR View Post
As soon as I switch to "CQ" mode and run the graph it will crash!
Awesome. So perhaps I'm doing something wrong when configuring the encoder. Looks like I have to read the x264 source more carefully. Thanks for the help.
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Old 29th December 2008, 13:24   #18  |  Link
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Hello,

after a little struggle with mingw Iím happy to announce a new version of the x264 wrapper filter with these changes:

* libx264 built with mingw
* memory leaks fixed
* CRF support

hopefully this filter should not crash randomly

Please do some testing and report if anything goes wrong.

Source : mm_x264_1.0.2.0_src.zip (1.5 MB)

Binary : mm_x264_1.0.2.0_bin.zip (444 KB)

Enjoy,

Igor
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Old 29th December 2008, 16:32   #19  |  Link
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got completely unwatchable video output.

graph:


settings:
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Old 29th December 2008, 16:55   #20  |  Link
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Did you set the settings before or after connecting to the muxer?
Btw. for the moment try not to use B-Frames - timestamp issues in DShow and so far I'm not sure how it works with muxers like Haali's.
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