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| Marcus |
| Posted: Oct 31 2010, 03:32 PM |
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Hi
Not a techie at all so unable to resolve problems with slow playback. I've tried entering 100 fps then 500 but no improvement from the default 10 fps.
Any help much appreciated,
Thanks 
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| fredgiblet |
| Posted: Oct 31 2010, 07:18 PM |
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There's more than one way to take your post so I'll try to answer both that I can think of.
If you are trying to make a clip play faster then changing the frame rate using the Video -> Frame Rate option wont do it, that doesn't change the playback speed it just adds/subtracts frames while keeping the playback speed the same. There MAY be a filter that lets you stretch the video, but I'm not aware of it at present.
The other thought I had while reading your post is that you are compressing the video and it's compressing at 10 fps, this is determined by the speed of your computer and the settings of your codec, if you want to compress faster you either need to use different compression setting or get a faster computer. |
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| Marcus |
| Posted: Nov 1 2010, 09:34 AM |
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Thanks a lot for your reply very much appreciated indeed as my favourite personal hobby is b/w pencil drawings of people, which I'm now for the first time trying to animate having drawn the body movements from one pic to the next reasonably close to each other. However it's playing so slowly it makes the body movements between each one jerky instead of hopefully flowing smoothly.
Unfortunately I've never got involved with compression or codecs before so no idea what or how to do it. I just hope this is the answer as I've only had this computer for a few months.
Again your help is very much appreciated !! Thank you. |
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| stephanV |
| Posted: Nov 1 2010, 10:24 AM |
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Spam killer ;)
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| QUOTE (fredgiblet @ Oct 31 2010, 08:18 PM) | | If you are trying to make a clip play faster then changing the frame rate using the Video -> Frame Rate option wont do it, that doesn't change the playback speed it just adds/subtracts frames while keeping the playback speed the same. There MAY be a filter that lets you stretch the video, but I'm not aware of it at present. |
Small correction:
You can achieve speed changes with the frame rate dialog, but you must be sure to use the options under 'source rate adjustment and not under 'frame rate conversion'.
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useful links:
VirtualDub, Input plugins and filters, AviSynth, AVI-Mux GUI, AC3ACM by fcchandler, VirtualDub FAQ |
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| Marcus |
| Posted: Nov 1 2010, 02:13 PM |
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Thanks sounds hopeful but not sure where to find source rate adjustment ?
Oops just found the wording however I have been entering the different speeds into it without success.
This post has been edited by Marcus on Nov 1 2010, 03:46 PM |
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| Marcus |
| Posted: Nov 3 2010, 10:18 AM |
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| QUOTE (fredgiblet @ Oct 31 2010, 07:18 PM) | The other thought I had while reading your post is that you are compressing the video and it's compressing at 10 fps, this is determined by the speed of your computer and the settings of your codec, if you want to compress faster you either need to use different compression setting or get a faster computer.
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Tried to find more info via Google on codec settings and how to use a different compression setting but unfortunately way, way too technical. Any chance of a simple explanation someone ? Please ?
Thanks |
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| fredgiblet |
| Posted: Nov 3 2010, 06:50 PM |
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"Thanks a lot for your reply very much appreciated indeed as my favourite personal hobby is b/w pencil drawings of people, which I'm now for the first time trying to animate having drawn the body movements from one pic to the next reasonably close to each other. However it's playing so slowly it makes the body movements between each one jerky instead of hopefully flowing smoothly."
Ah, so you're animating an image sequence. Unfortunately I've never done that so I don't know anything about how it works, hopefully someone else can answer that.
"Tried to find more info via Google on codec settings and how to use a different compression setting but unfortunately way, way too technical. Any chance of a simple explanation someone ? Please ?"
Every digital file is encoded in one way or another, some encoding schemes give better quality than others for a given size (though they typically require more power to encode and decode). Within many encoding schemes there's a variety of setting to change to fine-tune quality and compression. What settings are available and what they mean depends on what codec you are using.
The most common encoding scheme for videos today is probably H.264/MPEG-4 AVC, probably the most common codec for compressing to H.264 is x264 (Installable codec here http://komisar.gin.by/). There's a ton of settings available and realistically the defaults are usually good except for the main quality setting on the main page. To set which codec VDub uses you need to go to Video -> Compression and pick the one you want, if you are using the x264 codec I linked earlier it will show up as x264vfw, once you select it you can click on configure.
The main page is the most important for most people. Directly under the logos is a drop-down box and slider that let you pick the quality/size of the file. The three primary modes you are likely to use are (in order of appearance):
Single-pass lossless: This mode produces an output video that is perfectly identical to the input, however it produces much larger files than the other modes for very little gain in quality. This should be used for archiving and intermediate work (i.e. you expect to make more changes to the video before it's done), finished products don't really need this mode as you can achieve MUCH smaller file size for an imperceptible difference in quality.
Single-pass ratefactor-based: This is the best mode if you aren't shooting for a specific size for the output (such as trying to fit a movie onto a CD), this lets you pick the quality of the output but at the cost of not being able to predict the filesize. Typically a quality setting of 20-25 is good enough but you'll have to play around to see what looks good to you. Higher settings decrease quality and filesize, lower settings increase quality and filesize.
Multi-pass: With multi-pass you pick a bitrate and the codec will fit the video into that bitrate. This has the advantage of producing a specific filesize but the disadvantage of possible poor quality if the bitrate isn't high enough. In order to figure out what bitrate you need to get a specific filesize you'll need to find a bitrate calculator, I can't suggest one since I use ratefactor based encoding. The other downside of multi-pass is that you have to run it at least twice (1st pass and nth pass) in order to ensure good results, the single pass bitrate based encoding will provide lower quality and less reliable filesize.
Those are the most important settings, the rest of them get more technical than I'm willing to get into at the moment (though I've been thinking of writing a guide since I can't find a good one). If you have specific questions about the other settings post them and I'll answer. |
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| Marcus |
| Posted: Nov 3 2010, 10:14 PM |
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I really do appreciate all your time and effort in explaining so very carefully as it obviously took a lot of your time so many, many thanks.
Only problem is I can't understand a thing - hardly anything anywhere  I'm so sorry but it's so far out of my reach perhaps because I've been an artist for so long life has passed me by ? 
Could you possibly just tell me which links to click on and which buttons to press and not to press instead ?
I feel so stupid....!!
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| Marcus |
| Posted: Nov 5 2010, 11:45 AM |
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Hopefully this will give a clearer idea overall....
Not my work on the first link below but similar level genres as well as ordinary b/w artwork.
Thanks
http://www.deviantart.com/download/179145325/time_by_bakanekonei-d2ynpf1.jpg
....together with this stick man animation Flash tutorial and you tube video at the bottom.
http://www.hypergurl.com/blog/flash/beginner-tutorial.html
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| DarrellS |
| Posted: Nov 11 2010, 06:53 PM |
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Depends on how slow or how fast you want the animation to play. If you want each frame to show for 10 seconds then set it to .1000, 5 seconds .5000, 1 second 1.000, 1/2 second 5.000.
Use the top field to change the speed and the lower field to change amout of frames.
EXAMPLE:
The slower you you want the animation the lower you set the source framerate.
Not sure what you mean in your original post when you say you're having problems with slow playback since default 10fps is superfast for single frames of an animation. You are viewing 10 different pictures in one second. By changing from 10fps to 500fps means you would 500 different pictures in one second. I assume that you meant just the opposite, that you couldn't get it to play slower. To do that, you would need to lower the fps, not increase it.
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| Marcus |
| Posted: Nov 13 2010, 10:16 PM |
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Thanks for this, my fault I should have said morphing as distinct from animation. Hopefully this link below explains things more clearly ?
http://www.qondio.com/morphing-pictures-an...d-animated-gifs
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| Marcus |
| Posted: Dec 3 2010, 05:15 PM |
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| QUOTE (fredgiblet @ Nov 3 2010, 06:50 PM) | "Thanks a lot for your reply very much appreciated indeed as my favourite personal hobby is b/w pencil drawings of people, which I'm now for the first time trying to animate having drawn the body movements from one pic to the next reasonably close to each other. However it's playing so slowly it makes the body movements between each one jerky instead of hopefully flowing smoothly."
"Tried to find more info via Google on codec settings and how to use a different compression setting but unfortunately way, way too technical. Any chance of a simple explanation someone ? Please ?"
Every digital file is encoded in one way or another, some encoding schemes give better quality than others for a given size (though they typically require more power to encode and decode). Within many encoding schemes there's a variety of setting to change to fine-tune quality and compression. What settings are available and what they mean depends on what codec you are using. |
Just like to say thanks again to everyone for all their great help which after a lot of reading on the Net now makes Virtualdub much easier to understand !
I've managed to compress a 19k gif file to about 10 k in avi ok, but wondering if it's possible to reduce it still further as the total video sequence in gif at a guess will eventually be in the region of about 60k ? One other interesting thing is that all the drawings have now taken on a nice sepia tint from black and white ? Any idea how it happened as I'd like to have the deliberate option in the future  |
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