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HELP! .AVI-> Quicktime
- Thread starter blueflame
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Ok, reality check :
DVD making is a VERY CPU intensive process, at every stage.
http://www.bbc.co.uk/rd/pubs/papers/paper_14/paper_14.shtml
Making video for DVD isnt as easy as getting downloaded video to play in quicktime. You have to encode every video into only one of the two accepted DVD video standards. MPEG1 and MPEG2. MPEG2 is the real standard, whereas MPEG1 is heldover from the "old days"
Compression works like this: it scans every frame of the video, cutting the frame into a bazillion little squares. It then looks forward a few frames and back a few frames, comparing the squares to one another. Then based on the amount of change from previous to the next frames, it can throw out alot of information and keep only what it needs to make a decent looking video.
http://en.wikipedia.org/wiki/Mpeg2
Anyway, imagine 30 frames a second (usualy a dled video is 24), for a 30 min clip. Thats 54,000 frames. And each MUST be looked at individually by the encoder. That takes alot of time. What is more, alot of people encode their MPEG2 as a dual pass, technically taking twice as long as before.
Set top DVD players arent computers. They dont have access to the internet and all the latest and greatest codecs, like 3ivx or xVid. So they can only play what they know, which is the DVD standard of MPEG1/2 ONLY.
If you are just getting into DVDs, this is a good reality check and barrier to keep the wary away.
Encoding video takes the bulk of time, anywhere from 2-10x the actual length of the file. Then creating a nice DVD with menus can take 5 mins or 5 months. Building/muxing the DVD into the "video_ts" folder, takes a tiny bit of time. Then burning the VIDEO_TS folder to a DVD can take, depending on your burner, 5 min or an hour.
If you read anything in my post: DVD VIDEO TAKES A LONG TIME TO ENCODE, GET OVER IT OR GET A HELMET!
DVD making is a VERY CPU intensive process, at every stage.
http://www.bbc.co.uk/rd/pubs/papers/paper_14/paper_14.shtml
Making video for DVD isnt as easy as getting downloaded video to play in quicktime. You have to encode every video into only one of the two accepted DVD video standards. MPEG1 and MPEG2. MPEG2 is the real standard, whereas MPEG1 is heldover from the "old days"
Compression works like this: it scans every frame of the video, cutting the frame into a bazillion little squares. It then looks forward a few frames and back a few frames, comparing the squares to one another. Then based on the amount of change from previous to the next frames, it can throw out alot of information and keep only what it needs to make a decent looking video.
http://en.wikipedia.org/wiki/Mpeg2
Anyway, imagine 30 frames a second (usualy a dled video is 24), for a 30 min clip. Thats 54,000 frames. And each MUST be looked at individually by the encoder. That takes alot of time. What is more, alot of people encode their MPEG2 as a dual pass, technically taking twice as long as before.
Set top DVD players arent computers. They dont have access to the internet and all the latest and greatest codecs, like 3ivx or xVid. So they can only play what they know, which is the DVD standard of MPEG1/2 ONLY.
If you are just getting into DVDs, this is a good reality check and barrier to keep the wary away.
Encoding video takes the bulk of time, anywhere from 2-10x the actual length of the file. Then creating a nice DVD with menus can take 5 mins or 5 months. Building/muxing the DVD into the "video_ts" folder, takes a tiny bit of time. Then burning the VIDEO_TS folder to a DVD can take, depending on your burner, 5 min or an hour.
If you read anything in my post: DVD VIDEO TAKES A LONG TIME TO ENCODE, GET OVER IT OR GET A HELMET!