2015年9月27日 · So, x264 is still the most popular (free) H.264 encoder out there. But it is also still considered ridiculously cryptic as well. There are tons of switches and options in the encoder that allow you to create tiny files that capture an impressive amount of quality.

The cmdline x264 --fullhelp is pretty explicit about output bit depth from 8 to 10, not higher. Weird that -profile high10 is just silently ignored by 8bit x264. Internally, x264 compiled for high bit depth uses 16bpp for storing any 10bit data, so it probably …

2020年3月19日 · Adobe licenses its H.264 encoder from Mainconcept, which doesn't do that well at low bitrates. x264 is pretty much the frontier when it comes at low size output for a given quality target, or quality for a given bitrate target. x264 is what's used by platforms like Youtube / Vimeo ..etc to encode user videos.

2017年1月18日 · I just want to know if it's possible to encode audio & video at the same time by FFmpeg -c:a libfaac for audio & x264.exe for video. and any example!

Your code tells ffmpeg to generate a H264 video stream using the x264 encoder, and the options below are used by the encoder to decide keyframe placement.-x264opts "keyint=24:min-keyint=24:no-scenecut" keyint=24 tells x264 to forcibly generate a keyframe 24 frames after the last keyframe. min-keyint=24 sets the minimum keyframe distance.

I mostly use Virtualdub2 to upscale my videos (although I am looking for other methods) via two resize filters, Nearest Neighbor and Lanzcos3. Recently I am looking at the x264 encoder to encode my

2019年5月19日 · I got that information directly from the main x264 developer (Glaser aka Dark_Shikari) in the #x264dev IRC room, and it looked lossless to me. Re-encoding: 0 vs 18 If you need an intermediate and/or temporary file for re-encoding, use -crf 0 or some other lossless compressed format, such as UT video or FFv1, that works within your workflow.

2015年7月18日 · Yeah, if you're having problems saturating more cores, it's fine to run an encode or 3 in parallel. I think x264 should be able to saturate most of your 32 cores, but maybe only with a slower preset. Post your ffmpeg cmdline options, and console output, in your question. IDK if you're using something silly and low-quality like -preset veryfast ...

2017年6月7日 · Generally, H.264 and H.265 (as well as others like VP9) are lossy codecs, at least in their default settings with most encoders.

2018年10月31日 · Each gray value is 2 bytes but only the first 10 bits are used. I can't seem to get x264-10b to accept it as an input. x264-10b.exe --profile high10 --input-csp gray10le --input-depth 16 --fps 30 -o out.264 0_400x400_gray10le.yuv raw [error]: unsupported colorspace `gray10le' x264 [error]: could not open input file `0_400x400_gray10le.yuv'