25 April

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 22:49
  Is it still possible to compile modern x264 with the nal long start code used prior to release r1510? - Bryan Knowles Newest 'x264' Questions - Stack Overflow
  I'm currently nerding out on old technology with HD-DVDs. The only freely available muxer is hddvdmux, I'm using MultiAVCHD for this. Beginning with r1510, x264 switched to short start packets for NAL HRD (from what I understand). This makes the stream incompatible with hddvdmux. deank on doom9 patched hddvdmux to accept short start codes, but in doing so, the video file plays too quickly and the audio goes out of sync. The results I'm getting from the 2009 release of x264 leave much to be desired in comparison to modern releases, and I'd like to get those (...)

8 April

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 22:04
  What are the licence free codecs for FFMPEG? - FunkyPizza Newest 'x264' Questions - Stack Overflow
  So I've recently started implementing ffmpeg in an application that I do intend to distribute commercially. And I've had an hard time getting my head around the whole licensing process. The most commonly answered question I've seen seems to be about x264 which requires a paid licence from x264.org in order to use it commercially (right?). I started to look into mpeg4 instead but that too seemed to be locked behind some patent licensing fee (https://www.mpegla.com/programs/mpeg-4-visual/license-agreement/). I guess my question is the following, what (...) -- https://www.mpegla.com/programs/mpeg-4-visual/license-agreement/

19 March

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 14:19
  How to create IDR I-slice frame for H264 bytestream? - galuk Newest 'x264' Questions - Stack Overflow
  I depacketize the H264 video fragments from an IP.RTP stream and save them to video.ivf file. After depacketizing i have only [SPS] ,[PPS] and [non-IDR slice]. I try to create IDR slice by using x264 lib. x264 lib creates IDR frame which consists of 0x000001[SPS] 0x000001[PPS] 0x0001[SE slice] and 0x0001[I slice]. i insert it in the beginning of my file. But when i try to play this with VLC player it doesn't plays well. if i convert it to video.mp4 by ffmpeg i get playablr file. I think the problem is that after creating IDR frame with x264 lib I get SPS and PPS frames different from (...)

24 February

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 14:29
  ffmpeg not working after update to Mavericks - Hudson Buddy Newest 'x264' Questions - Stack Overflow
  After recently updating to Mavericks 10.9.5, my installation of ffmpeg has been bugging out Error: dyld: Library not loaded: /usr/local/lib/libx264.142.dylib Referenced from: /usr/local/bin/ffmpeg Reason: image not found Trace/BPT trap: 5 Any thoughts? I'm not very familar with manual compiling and I installed ffmpeg through Homebrew. I tried uninstalling and doing: brew install ffmpeg --HEAD brew install ffmpeg --build-from-source but it spits back a ./configure error ==> ./configure (...)

23 February

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 09:42
  Error Linking FFmpeg with libx264: Undefined Reference to __imp_x264_encoder_open_163 - zeyu Newest 'x264' Questions - Stack Overflow
  I'm attempting to compile FFmpeg with libx264 support on Windows using MinGW-w64, but I'm encountering a linking error when building . The error points to an undefined reference to in . Here are the details of the error message:libavcodec/avcodec-57.dll__imp_x264_encoder_open_163libx264.o In fact, I want to run the AccMPEG branch from https://github.com/Alex-q-z/myh264.git, and I am looking to obtain an executable (exe) to run on Windows. LD libavcodec/avcodec-57.dll E:/MSY/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: (...) -- https://github.com/Alex-q-z/myh264.git

21 February

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 04:49
  Why is a file unplayable in Windows Media Player? - zhang Newest 'x264' Questions - Stack Overflow
  I have written some code to generate a MP4 video. This is a simplified version of the code: #include #include #include #include #include #include extern "C" #include "libavformat/avformat.h" #include "libavutil/frame.h" #include "libavcodec/avcodec.h" #include "libavutil/imgutils.h" using namespace std; const int output_width = 180; const int output_height = 320; int main(int argc, char **argv) AVCodec *output_avc = avcodec_find_encoder_by_name("libx264"); if (!output_avc)  (...)

19 February

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 21:47
  h264 ffmpeg: How to initialize ffmpeg to decode NALs created with x264 - Raul Calvo Newest 'x264' Questions - Stack Overflow
  I encoded some frames using x264, using x264_encoder_encode() and after that I created AVPackets using a function like this: bool PacketizeNals( uint8_t* a_pNalBuffer, int a_nNalBufferSize, AVPacket* a_pPacket ) if ( !a_pPacket ) return false; a_pPacket->data = a_pNalBuffer; a_pPacket->size = a_nNalBufferSize; a_pPacket->stream_index = 0; a_pPacket->flags = AV_PKT_FLAG_KEY; a_pPacket->pts = int64_t(0x8000000000000000); a_pPacket->dts = int64_t(0x8000000000000000); I call this function like this: x264_nal_t* (...)

7 February

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 16:27
  how to use x264 dll in another project - Hadi Rasekh Newest 'x264' Questions - Stack Overflow
  I want to use x264 in my project. There is some line in the code said: `/* Application developers planning to link against a shared library version of libx264 from a Microsoft Visual Studio or similar development environment will need to define X264_API_IMPORTS before including this header. This clause does not apply to MinGW, similar development environments, or non Windows platforms. */` But I don't get this line: define X264_API_IMPORTS before including this header We can create x264 dll by its configuration and make ./configure (...)

25 January

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 09:03
  avcodec_find_encoder(AV_CODEC_ID_H264) returns null - Monjura Rumi Newest 'x264' Questions - Stack Overflow
  I am building an android application which will encode image captured from camera preview and later decode it. I am using ffmpeg library to encode and decode. To build static library with x264 I have used this tutorial. http://dl.dropbox.com/u/22605641/ffmpeg_android/main.html. As a source code of ffmpeg if I use the one downloaded from the link given in tutorial I can built it but can't build library if i use source code downloaded from here git clone git://source.ffmpeg.org/ffmpeg.git ffmpeg. I have built library in ubuntu and using it in windows 7 in Eclipse. As I need only h264 (...)

23 January

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 13:40
  How to limit the maximum bitrate of x264? - Chan Charis Newest 'x264' Questions - Stack Overflow
  I want to encode Blu-ray M2TS files with x264, my code is like this: enc_ctx = avcodec_alloc_context3(codec); enc_ctx->codec_id = AV_CODEC_ID_H264; enc_ctx->bit_rate = 20000000; When a video has a simple scene, such as 10 seconds, its encoding bitrate will be very small, only 1M or 2M bitrate. In order to achieve an average bitrate of 20M/s, the subsequent bitrate will be very large, sometimes reaching 150M/s. , at this time Blu-ray Player will freeze due to high bitrate. I set enc_ctx->rc_max_rate = 50000000; but it seems to have no effect. How can I limit the (...)

19 December

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 18:59
  Unknown encoder 'libx264' - why Newest 'x264' Questions - Stack Overflow
  I installed ffmpeg 0.8.9 on ubuntu11 by ./configure --enable-gpl --enable-nonfree --enable-pthreads --enable-libfaac --enable-libmp3lame --enable-libx264 When I run it ffmpeg -y -i test.mp4 -f mpegts -acodec libmp3lame -ar 48000 -ab 64k -vcodec libx264 -b 250k -flags +loop -cmp +chroma -partitions +parti4x4+partp8x8+partb8x8 -subq 5 -trellis 1 -refs 1 -coder 0 -me_range 16 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -bt 250k -maxrate 250k -bufsize 250k -rc_eq 'blurCplx^(1-qComp)' -qcomp 0.6 -qmin 10 -qmax (...)

9 October

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 13:40
  Encode NV12 frames to h264 using x264enc (appsrc and appsink) - Abdul Rehman Newest 'x264' Questions - Stack Overflow
  I am trying to encode NV12 frames to h264 files. For that I found a following code that is encoding raw frames to jpeg using jpegenc. The code works fine with jpeg encoder after some minor changes for NV12 frames. However x264enc encode only first frame and the rest of them are outputting the pps error when running with mplayer. First frame output [h264 ⓐ 0x7f1ea2ed3600]decoding for stream 0 failed [lavf] stream 0: video (h264), -vid 0 VIDEO: [H264] 1920x1080 0bpp 1.000 fps 0.0 kbps ( 0.0 (...) -- following

25 September

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 23:19
  x264/x265 options for fast decoding while preserving quality - user3301993 Newest 'x264' Questions - Stack Overflow
  I want to encode some videos in H264 and H265, and I would like to ask for help in order to chose the adequate options in x264/x265. My first priority is video quality. Lossless would be the best quality for example My second priority is fast decoding speed (ie: I would like faster decoding without sacrificing quality) fast decoding for me means that the decoding machine would use less CPU resources reading the resulting video Less RAM consumption would be a plus Latency is not important I don't care that much if the output file ends up (...) -- x265 doc

11 September

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 20:14
  First/single frame encoded with ffmpeg/libavcodec library cannot be immediately decoded - Marek Kijo Newest 'x264' Questions - Stack Overflow
  I'm using libavcodec library and h264 codec to prepare the video stream on one end, transmit the encoded frames to the other PC and there decode it. What I noticed after receiving very first packet (first encoded video frame) and feeding decoder with it, it is not possible to decode that frame. Only when I receive another frame the first one can be decoded but 'current' one not. So in the end I have constantly one frame delay on the decoder side. I was trying different presets (focusing rather on 'ultrafast'), also 'zerolatency' tune, also (...)

22 August

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 09:57
  building ffmpeg for windows x264.h: No such file or directory - 王伯荣 Newest 'x264' Questions - Stack Overflow
  I am building ffmpeg using MSYS2 in windows system. My compilation package is "i686-8.1.0-release-posix-dwarf" of mingw. My configure option parameters are as follows: ./configure --prefix="D:\\fkit\\b" --disable-static --enable-shared --enable-libx264 --enable-gpl --enable-version3 --enable-nonfree --enable-ffserver --enable-ffplay --disable-debug --disable-iconv --disable-zlib --extra-ldflags="-LD:\\fkit\\xb\\lib -lx264" --extra-cflags="-ID:\\ fkit\\xb\\include" --pkgconfigdir="D:\\fkit\\xb\\lib\\pkgconfig" As you can see, "D:fkit\\xb" is my libx264 installation directory. I (...)

26 May

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 07:05
  Build FFMPEG with x264 for Android - Kage Newest 'x264' Questions - Stack Overflow
  I am trying to build FFMPEG with libx264 for Android. I can successfully build and use FFMPEG for Android but I realized that I need the ability to encode, therefore I am trying to build FFMPEG with x264. I am using this tutorial to build FFmpeg for Android http://www.roman10.net/how-to-build-ffmpeg-for-android/ When trying to build FFMPEG I get an error: "ERROR: libx264 not found" And in my log it says: "/usr/local/lib/libx264.a: could not read symbols: Archive has no index; run ranlib to add (...) -- http://www.roman10.net/how-to-build-ffmpeg-for-android/