Problem with X264 encoding buffer
Posted: 05 Apr 2012 17:09
I'd like to encode a HD camera(720p) to local file with x264(bitrate = 3000kb,keyint=25,mux=ts), and play it seconds later while still encoding. but i found that the file always 0 kb long until I stopped recording. it seems that the x264 encoder buffered all the encoded frame in memory and wrote to disk until i stopped recording.
when i set x264 profile=high, the situation changed some time but still unstable.
how can I modify the disk writing period?
Any help is much appreciated.
my code:
when i set x264 profile=high, the situation changed some time but still unstable.
how can I modify the disk writing period?
Any help is much appreciated.
my code:
Code: Select all
vdev_name.Format(":dshow-vdev=%s",v_opt.device_name);
opt_out_str.Format(":sout=#transcode{width=%d,height=%d,vcodec=%s,vb=%d,scale=1,fps=%.1f,acodec=%s,ab=%d,channels=2,samplerate=44100}:std{access=file,mux=ts,dst=%s}}",
v_opt.input_width,v_opt. input_height, v_opt.vcodec,v_opt.bit_rate,v_opt.fps,a_opt.acodec,a_opt.bit_rate,v_opt.mux_format,opt_tmpfile_str);
const char * const vlc_args[] = {
"-I", "dumy", // No special interface
"--ignore-config", // Don't use VLC's config
"--plugin-path=./plugins",
"--live-caching=50"
};
inst = libvlc_new (sizeof(vlc_args) / sizeof(vlc_args[0]), vlc_args);
m = libvlc_media_new_location (inst, "dshow://");
libvlc_media_add_option(m,vdev_name.GetString());
libvlc_media_add_option(m,":sout-x264-keyint=25");
libvlc_media_add_option(m,opt_out_str.GetString());
mp = libvlc_media_player_new_from_media (m);
libvlc_media_player_play (mp)