I am trying to find a codec for opening an MP4 in VirtualDub. I followed the threaad below but with no luck for solving my situation.
From GSpot I have a screenshot which can be viewed from http://dwlamb.com/misc/gspot.jpg. The codec indicates avc1 Name: H.264/MPEG-4 AVC. From ffdshow, it indicates I have that codec enabled http://dwlamb.com/misc/ffdshow.jpg yet I can not open this MP4 in VirutalDub.
Can anyone offer input?
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Are you sure you enabled the ffdshow VFW h.264 decoder? It's just that your screenshot is for the DirectShow Decoder Configuration. Chances are it's enabled by default, but I thought it wouldn't hurt to ask.
I'm not even 100% sure the VFW Decoder is installed by ffdshow by default (I don't install it often enough to remember) but if it's there it uses a different shortcut to open it.
If you're just converting the whole thing from start to finish, DirectShow is fine for decoding, but if you're wanting to do much editing, it can be a pain as it's slow and not frame accurate. Even for opening video the way you're doing it, I prefer to use ffmsindex if I'm going to do any editing. With ffmsindex and AVIsynth installed it's just a matter of creating a basic AVIsynth script to open the video using ffmsindex. The first time you open the script using VirtualDub, there'll be a pause while ffms indexes the video (probably about a minute for a movie, depending on hard drive speed). Once it's created the index file the video will open in VirtualDub just as it does using DirectShow, only you'll be able to navigate through the video more easily and it's frame accurate. If you're interested in trying it, post back if you need instructions. Once you know how to do it, it's very easy.
Last edited by hello_hello; 25th Dec 2012 at 01:19.
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Yeah there's definitely a separate start menu shortcut. There's one for the Video Decoder Configuration and another for the VFW Configuration.
I have a vague feeling the VFW decoder is optional when you install ffdshow, so maybe you didn't install it.
Note the different colour icon for the VFW decoder. It also has Decoder and Encoder tabs.
And the second item in the left hand pane isn't "DirectShow Control".
VFW (Video for Windows) and DirectShow are different video subsystems in Windows. Generally codecs for one are not available to the other. Old editors typically use VFW (now deprecated by Microsoft). Media players typically use DirectShow.