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Questions tagged [virtualdub]

18 questions
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2 answers

VirtualDub script to concatenate a series of videos

I'm working on a video piece by piece, saved with the filenames scene1.avi, scene2.avi and so on. I want an easy way to build the video into one block and dub in the audio track. For this purpose, I'm using VirtualDub. Now, it's simple enough for me…
Niet the Dark Absol
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How to make a video with audio and a static image in VirtualDub

I swear I used to be able to do this easily by opening an image file, selecting an audio source by going to audio > Audio from other file... and then to Video > Frame Rate > Change So Video and Audio Durations Match. It is producing a file now but…
Tesshin
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AviSynth can't open my AVI file: “AVISource: Couldn't locate a decompressor for fourcc dvds”

I simply want to open an AVI file with AviSynth and feed it into VirtualDub. However, when I open my .avs script (consisting of just one AviSource() call), I get the following error: Avisynth open failure: AVISource: Couldn't locate a…
user4028648
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0 answers

Adjust hue/angle without affecting luminance of YUV image

I am writing a VirtualDub plug-in where there's a requirement to change hue/chroma of image without affecting luminance. Here's some code: Pixel32 *dst= fa->dst.data; int U= (*dst>>16) & 0xff; int Y= (*dst>> 8) & 0xff; int V= (*dst ) &…
Captain Jack
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ffmpeg decoder seems to drop frames

I am using avcodec (c++) api to decode video file frames and process them. I noticed that the decoded frames count is less than the expected\actual number of frames. The difference is 16 frames. While x frames were decoded with ffmpeg, VirtualDub…
Aviv Sharon
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Stacking 3 gmp4-files using Avisynth and VirtualDub, results in wrong colors and distorted files

I need to conduct the seemingly simple task of stacking 3 files next to each other. They are all the same: .avi Container, 320x240, 4:3, 25 fps, GeoVision Advanced MPEG-4 GEO codec. I installed the GeoVision codec…
Far
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How to re-derive keyframes in damaged AVI using ffmpeg -vcodec copy

I discovered some damaged AVI files that VLC complains about broken index when I try to play them. I can play directly without ability to scroll the timeline or wait...wait... for the index to be built (but not saved) and play normally. Some other…
andrixnet
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Script for virtualdub to cut videos

I have videos I would like to process to remove x secondes at their beginning. Since I have around 140 videos I started to write a script to do so but... it does not work ! My present script is…
Xavier
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VirtualDub install Video Codec

I spent hours to try to install xvid codec on my 32 bits version of VirtualDub I know the excellent pages : http://granjow.net/virtualdub-tutorial-exporting.html#content ... Does not work and the list of codecs contains only one ... see image Can…
user1628579
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VirtualDub filter framebuffer - freeing memory

I am writing a VirtualDub filter, which requires a separate frame buffer for intermediate image processing between fa->src.data and fa->dst.data (.data is essentially a pointer to Pixel data). I create a char pointer to the above using this: /*…
Captain Jack
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Preserving luma while rotating chroma (YUV <> RGB)

This is a follow up question to this thread. I have now managed to just rotate the UV components (chroma) without touching luma... sort of. I convert from RGB to YUV using this solution, change the UV values and convert back to RGB. However, the…
Captain Jack
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Avisynth total frames does not equal VirtualDub total frames

It appears that Dissolve and/or Fade change the total number of frames in .avs scripts. When I add up the total number of frames in the avs script and then load the avs script in Vdub the total number of frames is different. My real world example…
Corpuscular
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Extract image sequence with only 1 color chanel out of rgb avi movie with VirtualDub

I have an uncompressed RGB AVI file which containes 10 greyscale images: https://drive.google.com/open?id=0B9wKP6yNcpyfY1JzdmJTcHhjTmM (10 images) With VirtualDub I would like to extract the images whicht should have only 1 channel. I all cases that…
len
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Intra Frame Settings for UtVideo Codec in VirtualDub

In my previous question I'd asked for a convenient codec which supports intra frames and prevents onion skin animation. Now I'm using the UtVideo codec. Codec which supports intra-frame Which UtVideo version shall I use? And how get I the right…
Ramón Wilhelm
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Codec which supports intra-frame

I'm using VirtualDub and I want to digitalize a VHS movie frame by frame. But I need a codec which supports intra-frames. Do the following codecs supports intra-frame? If not where can I get or buy a codec with intra-frame?
Ramón Wilhelm
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