Join/trim clips without transcoding

[savvyguy]

Hi guys, I typically do my editing in premiere pro cc and just realised that it transcodes the clips for simple join / trim operations even though the output codec/bit rate is same as source.

Can anyone recommend a multi core / cuda enabled joiner / trimmer that can do it without transcoding again?

Tbanks!

[Baldrick]

videoredo or tmpgenc smart renderer

[railroadartwork]

videoredo or tmpgenc smart renderer

Hi Baldrick and savvyguy,

@Baldrick:

Wouldn't FFMPEG accomplish these tasks (minus the CUDA enabled part)?

Cut three 1 minute videos from the original video:
ffmpeg -i original.mpg -vcodec copy -acodec copy -ss 00:00:00 -t 00:01:00 first_minute.mpg
ffmpeg -i original.mpg -vcodec copy -acodec copy -ss 00:01:00 -t 00:01:00 second_minute.mpg
ffmpeg -i original.mpg -vcodec copy -acodec copy -ss 00:02:00 -t 00:01:00 third_minute.mpg

Join three videos together:
(create a file named inputMPG.txt)
file '1.mpg'
file '2.mpg'
file '3.mpg'
(then run the command to join)
ffmpeg -f concat -i inputMPG.txt -codec copy output.mpg

When I tested the cut example, the only thing that changed (very slightly) was the bitrate and I assumed that was because the number of null packets may have changed. My apologies if my post does not help the OP but I just had to ask this question.

Thanks,

railroadartwork

[savvyguy]

Hi there. I'd prefer a GUI as opposed to cmd style, as it'd be more user friendly.

[smrpix]

Hi there. I'd prefer a GUI as opposed to cmd style, as it'd be more user friendly.

Then go with Baldrick's initial suggestions. They're the best choices.

[Budman1]

I don't think you really need a multicore, cuda enabled, etc if you are not re-encoding since it's pretty fast. If you have a ton of these to join, it would make it worthwhile to have a program written for this and I recommend railroadartwork's suggestion for concat with ffmpeg:

[savvyguy]

Hi guys,

I've used videoredo for awhile on this joining task.

Have another scenario:

Sometimes I might want to replace a few seconds in the middle of a long clip (that was screwed up for whatever reason), e.g. 1:22 to 1:25 in a 4 minute clip. I will only get Premiere Pro CC to encode this 1:22 to 1:25.

What is the easiest way to replace this segment quickly (assuming that the replacement clip has exact same setting as the big clip)?

videoredo isn't v intuitive and would work only for simple joining (front/back).

[smrpix]

Sometimes I might want to replace a few seconds in the middle of a long clip (that was screwed up for whatever reason), e.g. 1:22 to 1:25 in a 4 minute clip. ...

What is the easiest way to replace this segment quickly (assuming that the replacement clip has exact same setting as the big clip)?

videoredo isn't v intuitive and would work only for simple joining (front/back).

Then you have to treat your clips as 3 separate pieces and rejoin them

1. CLIP A 00:00:00:00 - 00:01:22:00
2. CLIP B 00:01:22:00 - 00:01:25:00
3: CLIP A 00:01:25:00 - 00:04:00:00

(Premiere Pro has a few formats it can smart render -- you can look them up on the Adobe website -- but it's not likely to be formats you are using.)

[savvyguy]

precisely.

using your method means I have to re-render a major part of my clip in Premiere Pro CC before I can join 1 small faulty portion (perhaps 2secs) back to the main clip.

I need to find another way to just replace a small section in the middle of a clip.