пн, 13 нояб. 2023 г., 14:35 Aditya Dandavate <adityadandavat...@gmail.com>:
> On Sun, 12 Nov, 2023, 11:15 pm Andrew Randrianasulu, < > randrianas...@gmail.com> wrote: > > > вс, 12 нояб. 2023 г., 20:23 Aditya Dandavate < > adityadandavat...@gmail.com > > >: > > > > > > > So, Should I stick to h264_qsv or mpeg4 ? In general, which encoder > gives > > > higher quality at the same bitrate ? > > > > > > > Hardware encoders used to be not good at 2-4-6 Mbs range for live > > streaming, but from existence of some bluray compat option in nvenc > wrapper > > I can guess at BluRay bitrates they might be quite good? > > > I am using Intel, so I can't use Nvenc. So, which encoder should I stick to > for better quality or higher quality at same bitrate, h264_qsv or mpeg4 ? > well, from brief search g3240 Pentium from around year 2014. I have laptop with just slightly earlier Intel CPU/GPU (Sandybridge era), but I only tried h264_vaapi, and not QSV. for me 1080p 24 fps re-encode from yt-dlp download, at default setting was ok quality-wise, but I might be not best person to ask about visual quality. Back in the day (2003-5) I used ffmpeg (mencoder) for live-capturing tv / vhs stream with mpeg4 or asv2 (Asus video codec 2). Probably not best quality, but back then there was no hw encoders (for me, under Linux) so only way to encode was lowering capture resolution until process become realtime at 25 fps. You probably do not need strictly realtime encode, so ... I guess it also depend on where exactly you intend to play this stream. If intended device only have mpeg4 (ASP) decoder, or can't decode h264 stream at given resolution - then stick to mpeg4. If on the contrary your hardware ONLY can accelerate h264 stream as encoded by hw encoder - then go for it, if you are ok with quality (hw encoders might behave a bit different comparing to software ones when scene abruptly changes ....) Honestly, people were writing multipage articles comparing various codecs at various resolutions and input sequences. But for non-scientific use - just trust your eyes, I guess? _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".