Is there any trick to get audio encoding to initialize properly on win32? I
used the latest autobuilds from win32.libav.org and copied api-example.c.
avcodec_open(c, codec) always seems to return -22. Decoding works fine.
Thanks.
printf("Audio encoding\n");
/* find the MP2 encoder */
codec = avcodec_find_encoder(CODEC_ID_MP2);
if (!codec) {
fprintf(stderr, "codec not found\n");
exit(1);
}
c = avcodec_alloc_context3(codec);
/* put sample parameters */
c->bit_rate = 64000;
c->sample_rate = 44100;
c->channels = 2;
/* open it */
int r = avcodec_open(c, codec);
// always returns -22
if (r < 0) {
fprintf(stderr, "could not open codec\n");
exit(1);
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