DirectShowSource - short freezes

[vesolovski]

Dear AviSynth users,

I am having following problem with DirectShowSource:

Source clip is smooth, but after rendering it becomes strange - video freezes at some point (or points) (not working), but frame counter still goes on (working fine).

I don't know if this is the problem of AviSynth or maybe ffdshow. If so I still do not know how to fix this. Please provide me with some hints if you can.

I am attaching 3 files to help you visualize problem:
- script.avs
- source.avi (file being read by DirectShowSource)
- render.avi (problematic file received after rendering script.avs)

http://bit.ly/Hk4Sq7

[Bloax]

My best guess would be that DirectShowSource is a really bad pick for a source filter that's stupid and is totally OK with skipping frames.

[vesolovski]

Thank Bloax for your answer. However if I understand DirectShowSource well, I think it grabs frames from ffdshow "on the fly". If the problem was only with skipping frames, this should not be noticeable. My video freezes for nontrivial period of time (say 0,7 s) - it means DirectShowSource would have to have skipped approximatelly 0,7*29.97 = 21 following frames. I cannot imagine DirectShowSource is that bad. I think it rather skips single (separate) frames.

Summarizing, I would say the problem would or could be with something else.

[Bloax]

Tried FFMpegSource?

[vesolovski]

Yeah, I have.

But it (AviSource as well) has a limit of processed clips in one script file (approximatelly 15 for HD 1080p clips). DirectShowSource does not have such limit (related to memory limit of computer), but it is buggy in my case (problem described above).

[Midzuki]

Apparently I managed to make DSS behave "as it should"

fps=50, convertfps=true, framecount=265

and then:

AssumeFPS(29.97)

H.T.H.

[vesolovski]

Hello Midzuki,
I cannot check it now, but I will be able to do it in few days (trip). I hope it will work also for me. If it will, you are a genius )

Regards,
K.W.

[vesolovski]

I checked your solution on different computer. Works perfectly. Ever if I bypass framecount=265 (is it useful?)

As I said before - you are a genius

[vesolovski]

One more thing,

I checked this with HD1080 avi source file and rendered avs becomes so very slow. Sound goes at normal speed, but video much much slower

[Midzuki]

Originally Posted by vesolovski

As I said before - you are a genius

Far from that In fact, I have understood less than 5% of the whole Avisynth thing so far ( even though I'm a semi-regular AVS user since 2007 )

One more thing,

I checked this with HD1080 avi source file and rendered avs becomes so very slow. Sound goes at normal speed, but video much much slower

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