Very bad video quality

[Edu eDJ]

Ahora uso el OBS para grabar y el resultado es muy malo. He cambiado diferentes opciones, he visto varios videos, pero la calidad siempre es muy mala. Muy pixelado. Imagen adjunta.

Ahora mismo mi configuración es:

- Producción
· Modo de salida: avanzado.
Grabación:
- Formato de grabación: mp4 (aunque lo ponga en mkv o ts, la calidad es la misma).
- Codificador: x264
- Control de tasa: VBR
- Tasa de bits: 10,000 kbps
- CRF: 23
- Kayfram invterval: 0
- Uso de CPU presente: ultrarrápido (tengo un MSI Intel Core I7-10875 CUP 2.30 GHz. 32GB RAM
- Perfil: alto
- Melodía: película


- Video:
· Resolución: 3840x2160 (tengo un logitech 4K: https://www.amazon.es/gp/product/B0748NCPN5/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)
Filtro de escala descendente: lanczos
Valores comunes de FPS: 60

No es normal que la imagen se vea tan pixelada con esta configuración. No sé qué hacer...

¡¡Gracias!!

 

[FerretBomb]

10000kbps is not enough for 4K60 video. Not even CLOSE. Especially not with the Ultrafast preset. 10000 is not enough for 1080p60, and 4K60 is literally four times larger.

Use CQP to record, not VBR. This will automatically use as much or as little bitrate as is needed to keep the image quality good. Use a CQP level of 22 to start, go down to 16 if you need better, but the files will get MUCH larger the smaller the CQP level.

>>> NEVER RECORD TO MP4 DIRECTLY FOR ANY REASON. <<<

 

[Edu eDJ]

10000kbps is not enough for 4K60 video. Not even CLOSE. Especially not with the Ultrafast preset. 10000 is not enough for 1080p60, and 4K60 is literally four times larger.

Use CQP to record, not VBR. This will automatically use as much or as little bitrate as is needed to keep the image quality good. Use a CQP level of 22 to start, go down to 16 if you need better, but the files will get MUCH larger the smaller the CQP level.

>>> NEVER RECORD TO MP4 DIRECTLY FOR ANY REASON. <<<
[/CITA]


Thank you very much for your answer.
How much kbps would be correct?
CQP you mean CRF? I can't find the CQP option.

And in which recording format is it the best that OBS offers? Thanks!

 

[konsolenritter]

Looks like a wedding. Go for 1080p30 instead, and all should be fine. Even with 8k cbr for streaming. For recording go for CQP/CRF value instead as advised.

And your amazon link delivers to a logitech brio cam with 1080p60, not 4K. And don't believe such figures given for such cameras mostly!
Try to keep serious with your expectations.

 

[FerretBomb]

Thank you very much for your answer.
How much kbps would be correct?
CQP you mean CRF? I can't find the CQP option.

And in which recording format is it the best that OBS offers? Thanks!

Yes, sorry. CQP/CRF are the same thing, NVENC calls it one thing and x264 calls it another.
No bitrate needs to be set when using CQP/CRF. Using 22 for the CRF value is good enough for most uses, 16 will be much better quality, but much larger file size. (The CRF number is how far from 'exactly perfect' uncompressed video the encoder is allowed to go. 16 is visually lossless, and you should not go below that as there are very few gains and the file sizes will get absolutely insanely large.)

Record to FLV if you do not need multiple audio tracks, or MKV if you use a separated audio track setup.

 

[Edu eDJ]

¡Muchas gracias por las respuestas! ¡Lo pongo en práctica!