Export without losing quality

JH26 wrote on 4/6/2025, 6:27 PM

Hello,
I have two different video files that were filmed with the same camera and the same settings.

These are two files recorded with a Panasonic GH5 in MP4 (LPCM) / 4K / 10-bit / 150M / 25p mode.

Video specifications: MPEG-4 of 33.5 GB and 4.32 GB
Video: 150 Mbps - 3840 x 2160 (16:9) - 25 fps - AVC (component) (high 4:2:2 @ L5.1) (CABAC / 1 Ref Frame)
Audio: 1536 kbps, 48 ​​kHz, 16-bit, 2 channels, PCM (Big / signed)

I want to put these two video files on my Vegas Pro timeline, one after the other, remove the silence, and export the two videos as a single video file with virtually no loss in quality. I will then send this file to someone else who will edit it and edit the video. and create the final rendering.

Is this possible with virtually no visible loss? How? With what export parameters/settings/codecs?

Thanks in advance.

Comments

RogerS wrote on 4/6/2025, 7:38 PM

If you're going to be doing coloring, etc. as a next step Apple ProRes is a good choice. Double check the editor can work with those files and doesn't have another preferred format.

johnny-s wrote on 4/7/2025, 6:33 AM

ffmpeg's concatenation is used in many free utils. Shutter encoder etc maybe can do that. No quality loss. The “Dos” copy command may also do it. May not work with all video files. https://mindxmaster.com/mergejoin-multiple-video-files-into-one/

https://stackoverflow.com/questions/49371422/how-to-merge-two-videos-without-re-encoding

But this won’t remove the “silence”

Last changed by johnny-s on 4/7/2025, 6:54 AM, changed a total of 6 times.

PC 1:

Intel i9-9900K

32 GB Ram

AMD Radeon XFX RX 7900 XT

Intel UHD 630

Win 10

PC 2:

AMD Ryzen 9 7950X3D 16 core CPU

64 GB Ram

Nvidia 4090 GPU

Intel A770 GPU

Win 11

 

Laptop:

Intel 11th. Gen 8 core CPU. i9-11900K

64 GB Ram

Nvidia RTX 3080 GPU

Win 10

JH26 wrote on 4/13/2025, 12:27 PM

Okay.
Yes, I absolutely have to remove the silences first.

JH26 wrote on 4/13/2025, 12:32 PM

If you're going to be doing coloring, etc. as a next step Apple ProRes is a good choice. Double check the editor can work with those files and doesn't have another preferred format.

Thanks for your reply.

I didn't film in log, but there will be some color grading during the final edit.

With Apple ProRes, will I have minimal loss and maintain a very high data rate? So that I can edit video later?

Do I use ProRes XQ?

In 32-bit floating point (video level)? If I choose 32-bit floating point (full range), the colors are oversaturated...

RogerS wrote on 4/13/2025, 6:14 PM

For 32bit full, change view transform to off.

ProRes is less compressed than your source, see Apple's description of what the different varients do