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You should define what lossy means for you because your statement is incorrect for me. Shooting Raw with an ARRI Alexa is lossless, this is not the case when yo

You should define what lossy means for you because your statement is incorrect for me. Shooting Raw with an ARRI Alexa is lossless, this is not the case when you shoot R3D (Raw for RED). R3D is using JPEG2000 compression and will effectively destroy the data the sensor captured to some degree. This can have dramatic consequences when doing green screen keying and/or shooting in low light.

Joeboy 7y ago
Is the part you're disagreeing with "there's generally not much advantage over a good lossy codec"? There are definitely times it's not true, but I think I covered myself with "generally". Most footage is shot with adequate exposure and doesn't require keying etc.
- kelsolaar 7y ago
  I'm disagreeing with the "Virtually all video capture is lossy" which is simply not true. ARRI cameras and especially the Alexa are some of the most used cameras in the movie industry and the Alexa Raw format is lossless.
  - Joeboy 7y ago
    Those cameras also record ProRes though, which I would expect to be used far more commonly. At least outside of $100m+ movies where money is no object. Edit: I had a look at https://www.indiewire.com/2018/05/cannes-2018-camera-cinematographers-don-quixote-blackkklansman-under-the-silver-lake-1201960977/2/ https://www.indiewire.com/2018/05/cannes-2018-camera-cinemat... and annoyingly I have to admit that ARRIRAW looks to be much more popular I expected among smaller features. Like 10/32 specifically mention it, and some of the others are ambiguous.
    - kelsolaar 7y ago
      Sure they can but Directors and DOP will favour a Raw file format, e.g. ARRIRAW or R3D over ProRes. Disclaimer: I work in the industry and I'm in touch with most of the camera vendors either directly or indirectly and with a lot of people using them too. I'm also a user.
      - Joeboy 7y ago
        Yeah, it seems like I significantly underestimated the amount of ARRIRAW capture going on (see my edit above).

Joeboy 7y ago

Is the part you're disagreeing with "there's generally not much advantage over a good lossy codec"? There are definitely times it's not true, but I think I covered myself with "generally". Most footage is shot with adequate exposure and doesn't require keying etc.

kelsolaar 7y ago
I'm disagreeing with the "Virtually all video capture is lossy" which is simply not true. ARRI cameras and especially the Alexa are some of the most used cameras in the movie industry and the Alexa Raw format is lossless.
- Joeboy 7y ago
  Those cameras also record ProRes though, which I would expect to be used far more commonly. At least outside of $100m+ movies where money is no object. Edit: I had a look at https://www.indiewire.com/2018/05/cannes-2018-camera-cinematographers-don-quixote-blackkklansman-under-the-silver-lake-1201960977/2/ https://www.indiewire.com/2018/05/cannes-2018-camera-cinemat... and annoyingly I have to admit that ARRIRAW looks to be much more popular I expected among smaller features. Like 10/32 specifically mention it, and some of the others are ambiguous.
  - kelsolaar 7y ago
    Sure they can but Directors and DOP will favour a Raw file format, e.g. ARRIRAW or R3D over ProRes. Disclaimer: I work in the industry and I'm in touch with most of the camera vendors either directly or indirectly and with a lot of people using them too. I'm also a user.
    - Joeboy 7y ago
      Yeah, it seems like I significantly underestimated the amount of ARRIRAW capture going on (see my edit above).