FFmpegSource - Page 49

TheFluff · 9th November 2010, 20:50

Quote:

Originally Posted by burfadel

I've noticed in that ffms2 folder there's a single file called ffms2.dll that is much smaller than the one included in the r354 unicoderest (but its also from the same date). Does this rely on an external ffmpeg source?

No, that's just an aborted upload. I'll delete it. There is a lot of other old junk in that folder, too. I should probably clean it.

jase99 · 10th November 2010, 02:17

Hi, I am having a problem loading some m2v files using v2.13 and v2.14. v2.12 is ok. Thought I would post here to mention I've logged details and provided a sample here:
http://code.google.com/p/ffmpegsourc...s/detail?id=32

henryho_hk · 10th November 2010, 06:48

Quote:

Originally Posted by TheFluff

http://mod16.org/ffms2/ffms2-r354-unicodetest.7z
[*]FFVideoSource

What about ffaudiosource()?

TheFluff · 10th November 2010, 11:27

Quote:

Originally Posted by henryho_hk

What about ffaudiosource()?

Should work in the same way, as should FFIndex().

SilaSurfer · 13th November 2010, 17:42

Hello. I have a problem, maybe somebody could help me out. Ffmpegsource2 2.14mt and non mt version are giving me kind of "deadlocks", it stops responding in VirtualDub when seeking. I have put the ffms2.dll in system32 folder. Source is a Bluray which was remuxed into mkv with gsdmux from haali media splitter instalation package.

FFVideoSource("D:\Encoding\00000.track_4113.mkv", cache=true, cachefile="D:\system\00000.track_4113.mkv.ffindex")

It opens fine but when seeking and encoding it will just stop responding. Thanks

TheFluff · 13th November 2010, 20:58

Quote:

Originally Posted by SilaSurfer

Hello. I have a problem, maybe somebody could help me out. Ffmpegsource2 2.14mt and non mt version are giving me kind of "deadlocks", it stops responding in VirtualDub when seeking. I have put the ffms2.dll in system32 folder. Source is a Bluray which was remuxed into mkv with gsdmux from haali media splitter instalation package.

Why would you put ffms2.dll in system32?

Also, provide a sample file.

WILLIS · 14th November 2010, 05:55

hey im using FFMS2 for the first time and im having some difficulties...

im trying to load an avi with this
FFVideoSource("video.avi", int threads=2, int width=640, int height=272, string resizer="SPLINE", string colorspace="YV12")

and as a result i am getting
http://i52.tinypic.com/116j0ch.jpg

any ideas what im doing wrong? im sure its something simple...thanks!

sneaker_ger · 14th November 2010, 07:02

Use
FFVideoSource("video.avi", threads=2, width=640, height=272, resizer="SPLINE", colorspace="YV12")

In case you don't know: most of these parameters are optional, so if you don't want to do any resizing you can also simply use:
FFVideoSource("video.avi")

SilaSurfer · 14th November 2010, 18:10

Hey Thanks guys for your response. Last night Windows crashed on me, so I spend the whole day doing a fresh install. I tried it again and now it works. I don't know what was the reason for the issue, maybe the old windows installation. Thanks

yup · 16th November 2010, 08:17

Hi all!
please advice how i can use mt version FFMpegSource

Code:

A = FFAudioSource(X)
V = FFVideoSource(X)
AudioDub(V, A)
SetMTMode(2,4)
filter()

or

Code:

SetMTMode(5,4)
A = FFAudioSource(X)
V = FFVideoSource(X)
AudioDub(V, A)
SetMTMode(2,4)
filter()

With kind regards yup.

Gavino · 17th November 2010, 12:36

As I understand it, FFVideoSource sets the framerate to a value calculated from the duration of the first frame (except for MKV files, where it uses the average frame duration).

In principle, this should give the correct rate for CFR sources. However, in the case of FLV files, where timestamps have only millisecond accuracy, the calculated framerate can be out by enough to cause audio sync problems. For example, if the correct rate is 30fps, the first frame will appear to be 33ms long (instead of 33.333...), giving a frame rate of 30.303fps, an error of ~1%. Similar problems arise with 29.97, 24 and 23.976fps sources (there is no problem with 25fps, since frame duration is exactly 40ms).

Sure, you can manually add AssumeFPS() to your script, but you have to discover the correct framerate yourself by other means.
Would it not be possible for FFVideoSource to use the average frame duration for these sources too?

In the meantime, I have devised a workaround you can use in your script:

Code:

# Set frame rate from average frame duration, assuming CFR - use after FFVideoSource()
# Useful for sources such as FLV which have only millisecond accuracy on timestamps
function FFAssumeCFR(clip c) {
  cc = c.Crop(0, 0, 16, 2) # use small clip for efficiency
  # get timestamps of first and last frames - use runtime function to force frame access
  current_frame = 0
  dummy = c.IsYUV() ? cc.AverageLuma() : cc.RGBDifference(BlankClip(cc))
  ts1 = FFVFR_TIME
  current_frame = c.frameCount-1
  dummy = c.IsYUV() ? cc.AverageLuma() : cc.RGBDifference(BlankClip(cc))
  ts2 = FFVFR_TIME
  ts2 == ts1 ? c : c.AssumeFPS(current_frame*1000.0/(ts2-ts1))
}

If the underlying problem cannot (or will not) be fixed, perhaps this can be added to ffms2.avsi?

Myrsloik · 17th November 2010, 12:44

Quote:

Originally Posted by Gavino

If the underlying problem cannot (or will not) be fixed, perhaps this can be added to ffms2.avsi?

Sounds reasonable, I guess. Let's see what TheFluff can come up with...

TheFluff · 17th November 2010, 12:56

Actually I think it should just use the average for everything.

ajp_anton · 19th November 2010, 00:07

The binaries at http://code.google.com/p/ffmpegsource/downloads/list aren't compiled with postprocessing support. Is there a PP-enabled version somewhere?

TheFluff · 19th November 2010, 11:39

Not currently, but thanks for reminding me I need to build one. I'll build it when I get home from work.

TheFluff · 20th November 2010, 02:10

http://mod16.org/ffms2/ffms2-r362.7z

Built with 100% more libpostproc. Note that the syntax for enabling UTF8 support in the Avisynth plugin has changed to a more boring and mundane utf8=true.

Changelog since 2.14:

The Avisynth plugin now supports UTF8 filenames. (TheFluff)
The FFInfo() function (supplied by ffms2.avsi) will now round timestamps to nearest millisecond instead of truncating them. It's also been cleaned up in general and no longer relies on global variables. (Gavino)
Containers opened with libavformat will now report a framerate based on the average frame duration instead of the duration of the first frame, just like Matroska files and files opened with Haali's splitter do. Should fix CFR framerates being reported incorrectly in dumb containers like FLV. (TheFluff)
PC/TV luma range (16-235 versus 0-255) detection should now be a bit more reliable. (TheFluff)

burfadel · 20th November 2010, 05:29

That build r362 doesn't seem to work... I'm using Staxrip, which now reports a framerate of 2145338.250 and length 0.00. Of course, that then throws out x264.

TheFluff · 21st November 2010, 01:16

That's what I get for copypasting code without looking at it and posting releases without testing them. http://mod16.org/ffms2/ffms2-r363.7z should fix the problem.

kypec · 6th December 2010, 20:25

Dear developers, is there any chance you could add Ut Video Codec 8.5.0 source decoder support into FFMS? That way x264 would benefit from ability to directly import lossless AVI files encoded with UtVideo. Otherwise I suppose the only way to import such files is to use DirectShowSource() via Avisynth

Thanks for any reply, even the rejective one, much appreciated!

TheFluff · 6th December 2010, 21:08

Quote:

Originally Posted by kypec

Dear developers, is there any chance you could add Ut Video Codec 8.5.0 source decoder support into FFMS? That way x264 would benefit from ability to directly import lossless AVI files encoded with UtVideo. Otherwise I suppose the only way to import such files is to use DirectShowSource() via Avisynth

Thanks for any reply, even the rejective one, much appreciated!

You should ask the FFmpeg people, not us. FFMS doesn't have any video codecs of its own, it's just a wrapper around FFmpeg.

That said there's a VfW codec for UTVideo so it should work just fine with avisource().

10th November 2010, 02:17	#962 \| Link
jase99 *nix Join Date: Feb 2008 Posts: 34	v2.13 unable to load some m2v files Hi, I am having a problem loading some m2v files using v2.13 and v2.14. v2.12 is ok. Thought I would post here to mention I've logged details and provided a sample here: http://code.google.com/p/ffmpegsourc...s/detail?id=32

13th November 2010, 17:42	#965 \| Link
SilaSurfer Registered User Join Date: Oct 2009 Posts: 212	Hello. I have a problem, maybe somebody could help me out. Ffmpegsource2 2.14mt and non mt version are giving me kind of "deadlocks", it stops responding in VirtualDub when seeking. I have put the ffms2.dll in system32 folder. Source is a Bluray which was remuxed into mkv with gsdmux from haali media splitter instalation package. FFVideoSource("D:\Encoding\00000.track_4113.mkv", cache=true, cachefile="D:\system\00000.track_4113.mkv.ffindex") It opens fine but when seeking and encoding it will just stop responding. Thanks Last edited by SilaSurfer; 13th November 2010 at 17:54.

16th November 2010, 08:17	#970 \| Link
yup Registered User Join Date: Feb 2003 Location: Russia, Moscow Posts: 854	Hi all! please advice how i can use mt version FFMpegSource Code: A = FFAudioSource(X) V = FFVideoSource(X) AudioDub(V, A) SetMTMode(2,4) filter() or Code: SetMTMode(5,4) A = FFAudioSource(X) V = FFVideoSource(X) AudioDub(V, A) SetMTMode(2,4) filter() With kind regards yup.

17th November 2010, 12:36	#971 \| Link
Gavino Avisynth language lover Join Date: Dec 2007 Location: Spain Posts: 3,431	Framerate for FLV files in FFVideoSource As I understand it, FFVideoSource sets the framerate to a value calculated from the duration of the first frame (except for MKV files, where it uses the average frame duration). In principle, this should give the correct rate for CFR sources. However, in the case of FLV files, where timestamps have only millisecond accuracy, the calculated framerate can be out by enough to cause audio sync problems. For example, if the correct rate is 30fps, the first frame will appear to be 33ms long (instead of 33.333...), giving a frame rate of 30.303fps, an error of ~1%. Similar problems arise with 29.97, 24 and 23.976fps sources (there is no problem with 25fps, since frame duration is exactly 40ms). Sure, you can manually add AssumeFPS() to your script, but you have to discover the correct framerate yourself by other means. Would it not be possible for FFVideoSource to use the average frame duration for these sources too? In the meantime, I have devised a workaround you can use in your script: Code: # Set frame rate from average frame duration, assuming CFR - use after FFVideoSource() # Useful for sources such as FLV which have only millisecond accuracy on timestamps function FFAssumeCFR(clip c) { cc = c.Crop(0, 0, 16, 2) # use small clip for efficiency # get timestamps of first and last frames - use runtime function to force frame access current_frame = 0 dummy = c.IsYUV() ? cc.AverageLuma() : cc.RGBDifference(BlankClip(cc)) ts1 = FFVFR_TIME current_frame = c.frameCount-1 dummy = c.IsYUV() ? cc.AverageLuma() : cc.RGBDifference(BlankClip(cc)) ts2 = FFVFR_TIME ts2 == ts1 ? c : c.AssumeFPS(current_frame*1000.0/(ts2-ts1)) } If the underlying problem cannot (or will not) be fixed, perhaps this can be added to ffms2.avsi? __________________ GScript and GRunT - complex Avisynth scripting made easier

20th November 2010, 02:10	#976 \| Link
TheFluff Excessively jovial fellow Join Date: Jun 2004 Location: rude Posts: 1,100	http://mod16.org/ffms2/ffms2-r362.7z Built with 100% more libpostproc. Note that the syntax for enabling UTF8 support in the Avisynth plugin has changed to a more boring and mundane utf8=true. Changelog since 2.14: The Avisynth plugin now supports UTF8 filenames. (TheFluff) The FFInfo() function (supplied by ffms2.avsi) will now round timestamps to nearest millisecond instead of truncating them. It's also been cleaned up in general and no longer relies on global variables. (Gavino) Containers opened with libavformat will now report a framerate based on the average frame duration instead of the duration of the first frame, just like Matroska files and files opened with Haali's splitter do. Should fix CFR framerates being reported incorrectly in dumb containers like FLV. (TheFluff) PC/TV luma range (16-235 versus 0-255) detection should now be a bit more reliable. (TheFluff) Last edited by TheFluff; 20th November 2010 at 02:14.

14th November 2010, 05:55	#967 \| Link
WILLIS Registered User Join Date: Dec 2009 Posts: 24	hey im using FFMS2 for the first time and im having some difficulties... im trying to load an avi with this FFVideoSource("video.avi", int threads=2, int width=640, int height=272, string resizer="SPLINE", string colorspace="YV12") and as a result i am getting http://i52.tinypic.com/116j0ch.jpg any ideas what im doing wrong? im sure its something simple...thanks!

14th November 2010, 07:02	#968 \| Link
sneaker_ger Registered User Join Date: Dec 2002 Posts: 5,565	Use FFVideoSource("video.avi", threads=2, width=640, height=272, resizer="SPLINE", colorspace="YV12") In case you don't know: most of these parameters are optional, so if you don't want to do any resizing you can also simply use: FFVideoSource("video.avi")

14th November 2010, 18:10	#969 \| Link
SilaSurfer Registered User Join Date: Oct 2009 Posts: 212	Hey Thanks guys for your response. Last night Windows crashed on me, so I spend the whole day doing a fresh install. I tried it again and now it works. I don't know what was the reason for the issue, maybe the old windows installation. Thanks

17th November 2010, 12:56	#973 \| Link
TheFluff Excessively jovial fellow Join Date: Jun 2004 Location: rude Posts: 1,100	Actually I think it should just use the average for everything.

19th November 2010, 00:07	#974 \| Link
ajp_anton Registered User Join Date: Aug 2006 Location: Stockholm/Helsinki Posts: 805	The binaries at http://code.google.com/p/ffmpegsource/downloads/list aren't compiled with postprocessing support. Is there a PP-enabled version somewhere?

19th November 2010, 11:39	#975 \| Link
TheFluff Excessively jovial fellow Join Date: Jun 2004 Location: rude Posts: 1,100	Not currently, but thanks for reminding me I need to build one. I'll build it when I get home from work.

20th November 2010, 05:29	#977 \| Link
burfadel Registered User Join Date: Aug 2006 Posts: 2,229	That build r362 doesn't seem to work... I'm using Staxrip, which now reports a framerate of 2145338.250 and length 0.00. Of course, that then throws out x264.

21st November 2010, 01:16	#978 \| Link
TheFluff Excessively jovial fellow Join Date: Jun 2004 Location: rude Posts: 1,100	That's what I get for copypasting code without looking at it and posting releases without testing them. http://mod16.org/ffms2/ffms2-r363.7z should fix the problem.

6th December 2010, 20:25	#979 \| Link
kypec User of free A/V tools Join Date: Jul 2006 Location: SK Posts: 826	Lossless UtVideo Codec support Dear developers, is there any chance you could add Ut Video Codec 8.5.0 source decoder support into FFMS? That way x264 would benefit from ability to directly import lossless AVI files encoded with UtVideo. Otherwise I suppose the only way to import such files is to use DirectShowSource() via Avisynth Thanks for any reply, even the rejective one, much appreciated!