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better codec_tag setting

This commit is contained in:
Isaac Connor 2016-09-21 11:57:30 -04:00
parent 8b13401250
commit ae63861cd1
1 changed files with 18 additions and 16 deletions
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34
src/zm_videostore.cpp
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@ -80,17 +80,18 @@ VideoStore::VideoStore(const char *filename_in, const char *format_in,
output_format = oc->oformat;
video_stream = avformat_new_stream(oc, (AVCodec *)input_video_stream->codec->codec);
if (!video_stream) {
Fatal("Unable to create video out stream\n");
}
ret = avcodec_copy_context(video_stream->codec, input_video_stream->codec);
if (ret < 0) {
Fatal("Unable to copy input video context to output video context %s\n",
av_make_error_string(ret).c_str());
}
video_stream = avformat_new_stream(oc, (AVCodec *)video_stream->codec->codec);
if (!video_stream) {
Fatal("Unable to create video out stream\n");
}
if ( input_video_stream->codec->sample_aspect_ratio.den && ( video_stream->sample_aspect_ratio.den != input_video_stream->codec->sample_aspect_ratio.den ) ) {
Warning("Fixing sample_aspect_ratio.den from (%d) to (%d)", video_stream->sample_aspect_ratio.den, input_video_stream->codec->sample_aspect_ratio.den );
video_stream->sample_aspect_ratio.den = input_video_stream->codec->sample_aspect_ratio.den;
@ -133,7 +134,18 @@ VideoStore::VideoStore(const char *filename_in, const char *format_in,
video_stream->codec->time_base.den = video_stream->time_base.den;
}
video_stream->codec->codec_tag = 0;
// WHY?
//video_stream->codec->codec_tag = 0;
if (!video_stream->codec->codec_tag) {
if (! oc->oformat->codec_tag
|| av_codec_get_id (oc->oformat->codec_tag, input_video_stream->codec->codec_tag) == video_stream->codec->codec_id
|| av_codec_get_tag(oc->oformat->codec_tag, input_video_stream->codec->codec_id) <= 0) {
Warning("Setting codec tag");
video_stream->codec->codec_tag = input_video_stream->codec->codec_tag;
}
}
if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
video_stream->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
}
@ -342,16 +354,6 @@ int VideoStore::writeVideoFramePacket(AVPacket *ipkt, AVStream *input_video_stre
Debug(4, "writeVideoFrame init_packet");
av_init_packet(&opkt);
Debug(3, "Time bases input stream time base(%d/%d) input codec tb: (%d/%d) video_stream->time-base(%d/%d) output codec tb (%d/%d)",
input_video_stream->time_base.num,
input_video_stream->time_base.den,
input_video_stream->codec->time_base.num,
input_video_stream->codec->time_base.den,
video_stream->time_base.num,
video_stream->time_base.den,
video_stream->codec->time_base.num,
video_stream->codec->time_base.den
);
if ( 1 ) {
//Scale the PTS of the outgoing packet to be the correct time base