Sorry for top-posting 🙏
My content is gaming content, and I record the gameplay in form of .lmp
files.
When a command ( which isn't related to ffmpeg ) is given from a batch
file, the gameplay starts being played back.
During the playing back of the gameplay, the audio and video are encoded
simulataenously.
So, even if I wish, I can't use 2 pass encoding.
So, which option from the 2 should I stick to ? CVBR or ABR ?
On Fri, 1 Nov, 2024, 3:35 pm Ferdi Scholten,<fe...@sttc-nlp.nl> wrote:
Also, in general case, for gaming content, between CVBR and ABR, which
provides better quality at same filesizes ?
On Wed, 30 Oct, 2024, 7:40 pm Ferdi Scholten,<fe...@sttc-nlp.nl> wrote:
Okay, thank you sir.
Should I keep the bufsize 5 times that of maxrate ? Will that help in
effective allocation of bitrates ? Also, for getting the best possible
quality in this case, how high should be the value of bufsize ? What is
your recommendation ?
(I use the slow preset for both x264 and x265 for getting better
quality
at same filesizes btw).
On Wed, 30 Oct, 2024, 6:25 pm Ferdi Scholten,<fe...@sttc-nlp.nl>
wrote:
If I set " -b:v 5000k -maxrate 6000k -minrate 4000k " for x264, x265
and
vvenc, will this enable VBR encoding for these three encoders ?
_______________________________________________
If "constrained VBR" is what you want then the answer is yes.
It is not true VBR because it will never get below minrate or above
maxrate even if it would be possible/necessary for maintaining the
encoding quality
_______________________________________________
try to see it like this, the bufsize/maxrate is the frequency at which
ffmpeg checks for the need of changing the bitrate.
This is of course highly dependent on the type of content you have.
Detailed content with high motion and/or lots of scene changes will do
best with bufsize = maxrate, while for more static content bufsize can
be >= 5 times maxrate.
_______________________________________________
First, please stop top posting in this list! read the guidelines for
posting!
Second to answer your question: It all depends on the content. There is
no general "best quality type of encoding"
If you want the best quality for your given constraints (filesize and/or
bitrate) and you are not live streaming you should always use multiple
pass encoding,
if you are live streaming, read this:
https://trac.ffmpeg.org/wiki/StreamingGuide
_______________________________________________
If you can replay the .lmp file more than once you can use multi pass
encoding.
Otherwise I would use single pass cfr for encoding with the desired
quality, maybe with max-bitrate set.
-crf 16 is a good starting point if you want high quality encodes in x265
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