Converting to one medium , joining then converting to......

[phatsuperakuma]

HWhat i want to do is create a compliant dvd from shitty clips everyware. I have a heap of of video clips in different video formats with different resolutions fps etc . These include clips on dvd (unencypted) vobs, Rm , Flash , avi, mpeg 1 + 2 , quicktime plus finally some online gaming i want to record.

This is how im thinking about it. Encode each clip to one medium join them in that medium Then convert to compliant dvd mpeg2 using tmpgenc xpress then author with dvdlab.

First question is what medium should i convert them to before joining? Secondly what should i join them with onece ive decided on what medium?

[redwudz]

I am assuming you mean format when you say 'medium'.

If the majority of your clips are presently lower resolution formats such as RM, MPEG1, Quicktime, I would use the 1/2 D1 format (Check the DVD specification to the left).

Once all the framerates, audio types, video resolutions, etc., are converted to DVD compliant format, I would just put them individually into your authoring program and not join them. They should play seamlessly one after the other.

You may avoid some sync problems this way. This works well with TMPGEnc DVD Author, not sure about DVDlab.

[phatsuperakuma]

1/2 D1 format ? Im a n00b (i dont understand) Yeah some are extremely short clps and i was hoping once i converted it to the medium (uniform format) to join i would demux it and add audio

[yoda313]

Hello,
Half d1 I believe is (352x240) but check the specs on the site first. Convert everything to mpeg 2 at half d1 resolution and you'll be just fine. Don't forget to put the audio into 48khz since you want it on dvd.
Kevin

[junkmalle]

Full D1 is 720x480 (NTSC, used in USA, Canada, Japan, etc) or 720x576 (PAL, used in Europe, etc). Half D1 is 352x480 or 352x576 (PAL). Quarter D1 is 352x240 or 352x288.

[yoda313]

Hello,
Thanks junkmalle, I forgot the second half of the resolution for d1.
Kevin

[junkmalle]

Yoda, No Prob. Just wanted make sure Phat didn't get it wrong.

[phatsuperakuma]

So onece ive converted everything to d1/d2 , what should i join with ? Im thinking about using Tmpgenc mpeg tools to join , is it the best ? What do other people use? And what bitrate for (d1/2)is dvd compliant? Also im wondering if some of the shitty clips in mpeg1 transcoded to mpeg2 will losse quality? What should i do about that interlace *everything* or just letterbox some clips?

[phatsuperakuma]

Bump.... any ideas

[junkmalle]

Exactly what you should do for any particular source will depend on that source. It's not possible to give you a single answer that will work with all possible source material.

If all your sources are below 352x240 you can stick with 1/4 D1 (352x240). Then interlacing won't be an issue. If most are higher resolution than that you will probably want to make all of them 1/2 D1 (352x480). If most of your sources are much larger (640x480, 640x272...) you'll want to go with full D1 (720x480).

So once ive converted everything to d1/2, what should i join with?

I don't think you sould join them at all. Leave them all as separate clips. Mastering your DVD will be easier that way.

what bitrate for (d1/2) is dvd compliant?

Anything under ~9000 kbps is compliant, but what bitrate you should use will depend on your source material. The best compromise will probably be between 2000 and 4000 kbps for 1/2 D1 video. You will have to perform the tests yourself to determine what you can live with.

Also im wondering if some of the shitty clips in mpeg1 transcoded to mpeg2 will losse quality?

Generally speaking, any time you convert from one format to another you will loose a little quality. The loss will be minimal if you use enough resolution and bitrate.

What should i do about that interlace *everything* or just letterbox some clips?

Interlacing and letterboxing are two different issues. Any sources that are interlaced should probably remain that way unless you can inverse telecine them. Sources that are 23.976 fps have already been inverse telecined. You can leave them that way marked for 3:2 pulldown at playback time.

You probably will want to letterbox your wide screen sources by adding black bars to the top and bottom.

[jimmalenko]

What i want to do is create a compliant dvd from shitty clips everyware. I have a heap of of video clips in different video formats with different resolutions fps etc . These include clips on dvd (unencypted) vobs, Rm , Flash , avi, mpeg 1 + 2 , quicktime plus finally some online gaming i want to record.

Sounds like downloaded porn series's

This is how im thinking about it. Encode each clip to one medium join them in that medium Then convert to compliant dvd mpeg2 using tmpgenc xpress then author with dvdlab.

First question is what medium should i convert them to before joining? Secondly what should i join them with onece ive decided on what medium?

I would not join anything - let the authoring software take care of that. For DVD compliance, everything will need to be converted to either MPEG-1 or MPEG-2 with 48Khz audio.

Probably the first thing you need to work out is the total running time of all the clips you wish to put onto DVD. This then determines what bitrate and resolution you whould use.

Once you have figured that out, I would re-encode everything to MPEG-2, keeping the fps at its original value if the fps is 23.976, 25 or 29.976 fps.

I would never resize up in terms of resolution. I let the TV do the resizing for me as I have found it to be much better than TMPGEnc at resizing.