R3D compression in RCX

[Rui Guerra]

Hi all,

- Is it possible to check the R3D compression ratio of a clip inside RCX?

- Is it possible to change it while doing a R3D Trim export?

Thanks,

 

[Marcus Friedlander]

1. Yes. It's possible to check the compression in RC-X. It should be in the metadata tab.

2. No. To my knowledge, it's not possible to change the compression during a trim.

 

[Rui Guerra]

OK, I've found the RECODE compression in the metadata.

How nice it would be if we could change it in RC-X. That way, besides trimming we could also reduce file size in a controlled way.

 

[Terry VerHaar]

How would that even work? Once it is compressed to a certain level in the original footage, whatever was lost on the compression is lost forever. You can't go back and compress it less. OTOH, if you want it more compressed, you can transcode to another format.

 

[Rui Guerra]

The idea was not to reduce compression but to increase it, to spare some additional space in HD while retaining the R3D file format for future versatility.

After a project is finish, or simply when we realize that we don't need such a low compression ratio, it will be useful to be able tom make an R3D trim AND recompress the file further to save more disk space.

Transcoding to another more compressed format is not the same thing...

 

[Misha Engel]

The idea was not to reduce compression but to increase it, to spare some additional space in HD while retaining the R3D file format for future versatility.

After a project is finish, or simply when we realize that we don't need such a low compression ratio, it will be useful to be able tom make an R3D trim AND recompress the file further to save more disk space.

Transcoding to another more compressed format is not the same thing...

It is a lot easier (and probably cheaper when time is money) to buy some extra HD's, the current pricing is around € 30..40/TB for a descent 7200 rpm harddrive.
1 hour of the highest quality 8k 5:1 monstro footage is around 1 TB.

Let's say you could recompress that to 8k 10:1 you would only save € 15..20/hour of footage and loose quality.

 

[Bob Gundu]

Transcoding to another more compressed format is not the same thing...

Transcoding to a smaller resolution would actually look better than compressing a compressed R3D to more compression at the same size.

 

[Rui Guerra]

It is a lot easier (and probably cheaper when time is money) to buy some extra HD's, the current pricing is around € 30..40/TB for a descent 7200 rpm harddrive.
1 hour of the highest quality 8k 5:1 monstro footage is around 1 TB.

Let's say you could recompress that to 8k 10:1 you would only save € 15..20/hour of footage and loose quality.

It makes sense...