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Code Issues Releases Activity

examples/encode_video: switch to the new encoding API

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This commit is contained in:
Anton Khirnov 2016-10-20 11:03:20 +02:00
parent fee0f1de2c
commit 5f102a9559
1 changed files with 31 additions and 28 deletions
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59
doc/examples/encode_video.c
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@ -34,12 +34,39 @@
#include "libavutil/frame.h"
#include "libavutil/imgutils.h"
static void encode(AVCodecContext *enc_ctx, AVFrame *frame, AVPacket *pkt,
FILE *outfile)
{
int ret;
/* send the frame to the encoder */
ret = avcodec_send_frame(enc_ctx, frame);
if (ret < 0) {
fprintf(stderr, "error sending a frame for encoding\n");
exit(1);
}
while (ret >= 0) {
ret = avcodec_receive_packet(enc_ctx, pkt);
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
return;
else if (ret < 0) {
fprintf(stderr, "error during encoding\n");
exit(1);
}
printf("encoded frame %3"PRId64" (size=%5d)\n", pkt->pts, pkt->size);
fwrite(pkt->data, 1, pkt->size, outfile);
av_packet_unref(pkt);
}
}
int main(int argc, char **argv)
{
const char *filename;
const AVCodec *codec;
AVCodecContext *c= NULL;
int i, ret, x, y, got_output;
int i, ret, x, y;
FILE *f;
AVFrame *picture;
AVPacket pkt;
@ -130,35 +157,11 @@ int main(int argc, char **argv)
picture->pts = i;
/* encode the image */
ret = avcodec_encode_video2(c, &pkt, picture, &got_output);
if (ret < 0) {
fprintf(stderr, "error encoding frame\n");
exit(1);
}
if (got_output) {
printf("encoding frame %3d (size=%5d)\n", i, pkt.size);
fwrite(pkt.data, 1, pkt.size, f);
av_packet_unref(&pkt);
}
encode(c, picture, &pkt, f);
}
/* get the delayed frames */
for (got_output = 1; got_output; i++) {
fflush(stdout);
ret = avcodec_encode_video2(c, &pkt, NULL, &got_output);
if (ret < 0) {
fprintf(stderr, "error encoding frame\n");
exit(1);
}
if (got_output) {
printf("encoding frame %3d (size=%5d)\n", i, pkt.size);
fwrite(pkt.data, 1, pkt.size, f);
av_packet_unref(&pkt);
}
}
/* flush the encoder */
encode(c, NULL, &pkt, f);
/* add sequence end code to have a real MPEG file */
fwrite(endcode, 1, sizeof(endcode), f);