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obs-ffmpeg: Add HLS output

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Add and register an obs_output_info struct called
ffmpeg_hls_muxer. It uses ffmpeg's HLS muxer to stream output.

Add threading and buffer to reduce skipped frames.
Also add frame drop logic when there are too many packets in the
buffer for congestion control.
This commit is contained in:
Maya Venkatraman
2020-10-13 13:50:47 -07:00
committed by jp9000
parent c4e71794d9
commit 49d351b537
6 changed files with 385 additions and 7 deletions
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21
plugins/obs-ffmpeg/ffmpeg-mux/ffmpeg-mux.c
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@@ -623,29 +623,38 @@ static inline int open_output_file(struct ffmpeg_mux *ffm)
#define SRT_PROTO "srt"
#define UDP_PROTO "udp"
#define TCP_PROTO "tcp"
#define HTTP_PROTO "http"
static int ffmpeg_mux_init_context(struct ffmpeg_mux *ffm)
{
AVOutputFormat *output_format;
int ret;
bool is_network = false;
bool is_http = false;
is_http = (strncmp(ffm->params.file, HTTP_PROTO,
sizeof(HTTP_PROTO) - 1) == 0);
if (strncmp(ffm->params.file, SRT_PROTO, sizeof(SRT_PROTO) - 1) == 0 ||
strncmp(ffm->params.file, UDP_PROTO, sizeof(UDP_PROTO) - 1) == 0 ||
strncmp(ffm->params.file, TCP_PROTO, sizeof(TCP_PROTO) - 1) == 0)
strncmp(ffm->params.file, TCP_PROTO, sizeof(TCP_PROTO) - 1) == 0 ||
is_http) {
is_network = true;
if (is_network) {
avformat_network_init();
output_format = av_guess_format("mpegts", NULL, "video/M2PT");
} else {
output_format = av_guess_format(NULL, ffm->params.file, NULL);
}
if (is_network && !is_http)
output_format = av_guess_format("mpegts", NULL, "video/M2PT");
else
output_format = av_guess_format(NULL, ffm->params.file, NULL);
if (output_format == NULL) {
fprintf(stderr, "Couldn't find an appropriate muxer for '%s'\n",
ffm->params.printable_file.array);
return FFM_ERROR;
}
printf("info: Output format name and long_name: %s, %s\n",
output_format->name ? output_format->name : "unknown",
output_format->long_name ? output_format->long_name : "unknown");
ret = avformat_alloc_output_context2(&ffm->output, output_format, NULL,
ffm->params.file);