Can this trigger VBR encoding for x264, x265, and libvvenc ?
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 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
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, <ferdi@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 _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or email ffmpeg-user-request@ffmpeg.org with subject "unsubscribe".
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,<ferdi@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 _______________________________________________
Okay, thank you sir. 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.
Okay, got it 👍 Thanks sir 🙏 On Wed, 30 Oct, 2024, 7:40 pm Ferdi Scholten, <ferdi@sttc-nlp.nl> wrote:
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,<ferdi@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 _______________________________________________
Okay, thank you sir. 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. _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or email ffmpeg-user-request@ffmpeg.org with subject "unsubscribe".
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, <ferdi@sttc-nlp.nl> wrote:
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,<ferdi@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 _______________________________________________
Okay, thank you sir. 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. _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or email ffmpeg-user-request@ffmpeg.org with subject "unsubscribe".
provides better quality at same filesizes ?
On Wed, 30 Oct, 2024, 7:40 pm Ferdi Scholten,<ferdi@sttc-nlp.nl> wrote:
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,<ferdi@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 _______________________________________________
Okay, thank you sir. 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
Also, in general case, for gaming content, between CVBR and ABR, which 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
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, <ferdi@sttc-nlp.nl> wrote:
provides better quality at same filesizes ?
On Wed, 30 Oct, 2024, 7:40 pm Ferdi Scholten,<ferdi@sttc-nlp.nl> wrote:
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,<ferdi@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 _______________________________________________
Okay, thank you sir. 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
Also, in general case, for gaming content, between CVBR and ABR, which 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
_______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or email ffmpeg-user-request@ffmpeg.org with subject "unsubscribe".
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,<ferdi@sttc-nlp.nl> wrote:
provides better quality at same filesizes ?
On Wed, 30 Oct, 2024, 7:40 pm Ferdi Scholten,<ferdi@sttc-nlp.nl> wrote:
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,<ferdi@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 _______________________________________________
Okay, thank you sir. 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
Also, in general case, for gaming content, between CVBR and ABR, which 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
No, unfortunately, opening the .lmp files 2nd time is not possible :( Fine, I'll use your recommended rate control method. 👍 On Fri, 1 Nov, 2024, 6:12 pm Ferdi Scholten, <ferdi@sttc-nlp.nl> wrote:
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,<ferdi@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,<ferdi@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
Sorry for top-posting 🙏 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,<ferdi@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 _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or email ffmpeg-user-request@ffmpeg.org with subject "unsubscribe".
participants (2)
-
Aditya Dandavate -
Ferdi Scholten