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Questions tagged [x264]

x264 is a free software library and application for encoding video streams into the H.264/MPEG-4 AVC format, and is is released under the terms of the GNU GPL.

Provides best-in-class performance, compression, and features.

Achieves dramatic performance, encoding 4 or more 1080p streams in realtime on a single consumer-level computer.

Gives the best quality, having the most advanced psychovisual optimizations.

Support features necessary for many different applications, such as television broadcast, Blu-ray, low-latency video applications, and web video.

x264 forms the core of many web video services, such as Youtube, Facebook, Vimeo, and Hulu. It is widely used in television broadcast and by ISP.

More information at http://en.wikipedia.org/wiki/X264

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CLSID for x264 DirectShow filter

I have used x264 DirectShow filter from Monogram for decoding h264 avc video , i need to create intrance and add filter to graph in directshow , i checked the CLSID of it from grapthEdit , and that is 'x264' , i guess that to create instance we…
meghana
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Does 'keyint infinite' improve overall compression with crf and mb-tree?

After reading what intra-refresh does, I kinda got confused. I'm encoding for YouTube and YouTube will re-encode the video-file anyways, so I thought "why not removing all these heavy IDR-frames?" I just want to compress my video as hard as…
HitomiTenshi
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How to compile ffmpeg and x264 with thread support for android?

i want to compile both x264 and ffmpeg with thread support for ANDROID .FFmpeg and x264 didn't compile with thread support even after enabling enable-pthreads and enable-threads respectively. Both the config.h contains #define HAVE_THREAD 0 and…
Sureshkumar Menon
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Error in compiling x264 on ARM 64-bit platform

The same x264 source code I compiled on Debian 10 (Buster) system has no problem, but I can't compile it on an ARM 64-bit platform. Why? Maybe there is something wrong with the Makefile, but I don't know where it is. Configure ./configure…
yanzhang.guo
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How to fix "fatal error: x.264 no such file or directory"

I wrote a makefile which builds a C program attaching the x.264 header. After trying to execute the makefile in terminal I receive the fatal error: "example.c line [line of #include ] x264.h no such file or directory". Below you can find the C code…
user11340790
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How to use direct264 in Directshow?

I am finding a h264 (x264) directshow filter for my application and i found project direct264 here: https://sourceforge.net/projects/direct264 When can see dump.ax from binary package but when i load it to GraphStudioNext (or try to register it by…
Phung Tien Trieu
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how to wide gamut ,convert from 8bit to 10bit

I know that the video we watched on the tv is compressed.The range of the gamut will be narrow.I want to know if there is a magical way can achieve the extending.Dolby claimd the Perceptual Quantizer(PQ)EOTE .there is two function Eg.the…
zhx
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What does ' wpredp' parameter do in x264 (or FFmpeg)?

I don't understand what 'wpredp' do? I've tried to find the description of 'wpredp' parameter but without success. Can somebody explain what it do?
Oleksandr
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Fastest method to add .ass (ssa, aegisub) SubStationAlpha subs to mp4?

So i have video file mp4, and without changing its quality i want to add ass hardsubs. i am doin this with ffmpeg: on windows: ffmpeg -i input.mp4 -c:v libx264 -preset:v medium -profile:v baseline -level 3.0 -movflags +faststart -vf ass=insubs.ass…
user3762355
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x264 on Ubuntu video bad/corrupted

I am trying to use command line x264 to produce a blu-ray compatible file for use in Adobe Encore. For the source file I've tried both ProRes and mpeg2, both 1080p24. Both files import into Encore fine (no transcoding needed which is great) but…
Ryzone
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How is the FFMPEG x264 result bitrate calculated?

When encoding in x264 (libx264) there is a listing at the end showing different encoding stats. I noticed that the Bitrate is too high. I was wondering how this can be. Here is an example: frame=177719 fps= 24 q=-1.0 Lsize= 4768888kB…
secondplace
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ffmpeg 2 pass encoding- understand the statistics in the output .log file

I am using 2 pass encoder to encode my input video with a target bitrate. I want to get the encoder (x264) statistics from the first pass- these statistics are written to ffmpeg2pass.log the output for each frame looks like that: in:2 out:2 type:B…
Yaelvi
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Failed to compile x264 library for android, error description: clang:error no such file or directory

I use a shell script to compile the x264 library to the android platform, the architecture is armeabi-v7a,The x264 library was cloned from github。 I am sure I have those directories,and I checked the search engine such as google,No one encountered…
Lee.Saipeng
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