I'm encoding a video but I need to find which buffer size I should
allocate for the video.. I found a code but 100000 isn't enough for
some videos with large size. HOw can I find the optimum size?
And I couldn't understand how I can allocate a buffer size for a
video? Which preferences of a video or frame should I be interested
for that purpose ?
Thanks
Here is my code;
static void open_video(AVFormatContext *oc, AVStream *st)
{
AVCodec *codec;
AVCodecContext *c;
c = st->codec;
/* find the video encoder */
codec = avcodec_find_encoder(c->codec_id);
if (!codec) {
fprintf(stderr, "codec not found\n");
exit(1);
}
/* open the codec */
if (avcodec_open(c, codec) < 0) {
fprintf(stderr, "could not open codec\n");
exit(1);
}
video_outbuf = NULL;
if (!(oc->oformat->flags & AVFMT_RAWPICTURE)) {
/* allocate output buffer */
/* XXX: API change will be done */
/* buffers passed into lav* can be allocated any way you
prefer,
as long as they're aligned enough for the architecture, and
they're freed appropriately (such as using av_free for
buffers
allocated with av_malloc) */
video_outbuf_size =100000;
video_outbuf = av_malloc(video_outbuf_size);
}
/* allocate the encoded raw picture */
picture = alloc_picture(c->pix_fmt, c->width, c->height);
if (!picture) {
fprintf(stderr, "Could not allocate picture\n");
exit(1);
}
}
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