From: Karthick Jeyapal <kjeya...@akamai.com>
Otherwise some versions of chrome browser returns "codec not supported" error
---
libavformat/dashenc.c | 79 ++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 78 insertions(+), 1 deletion(-)
diff --git a/libavformat/dashenc.c b/libavformat/dashenc.c
index 9e72636..5443e31 100644
--- a/libavformat/dashenc.c
+++ b/libavformat/dashenc.c
@@ -170,6 +170,79 @@ static void dashenc_io_close(AVFormatContext *s,
AVIOContext **pb, char *filenam
}
}
+static void set_vp9_codec_str(AVCodecParameters *par, char *str, int size) {
+ int profile, level, bitdepth;
+ int picture_size = par->width * par->height;
+ switch (par->format) {
+ case AV_PIX_FMT_YUV420P:
+ case AV_PIX_FMT_YUVA420P:
+ bitdepth = 8;
+ profile = 0;
+ break;
+ case AV_PIX_FMT_YUV422P:
+ case AV_PIX_FMT_YUV440P:
+ case AV_PIX_FMT_GBRP:
+ case AV_PIX_FMT_YUV444P:
+ bitdepth = 8;
+ profile = 1;
+ break;
+ case AV_PIX_FMT_YUV420P10:
+ bitdepth = 10;
+ profile = 2;
+ break;
+ case AV_PIX_FMT_YUV420P12:
+ bitdepth = 12;
+ profile = 2;
+ break;
+ case AV_PIX_FMT_YUV422P10:
+ case AV_PIX_FMT_YUV440P10:
+ case AV_PIX_FMT_GBRP10:
+ case AV_PIX_FMT_YUV444P10:
+ bitdepth = 10;
+ profile = 3;
+ break;
+ case AV_PIX_FMT_YUV422P12:
+ case AV_PIX_FMT_YUV440P12:
+ case AV_PIX_FMT_GBRP12:
+ case AV_PIX_FMT_YUV444P12:
+ bitdepth = 12;
+ profile = 3;
+ break;
+ default:
+ goto error;
+ }
+ // Finding VP9 level accurately in a ffmpeg muxer is almost impossible.
+ // Hence we will set approximate levels based on the width and height.
+ if (picture_size <= 0) {
+ goto error;
+ } else if (picture_size <= 36864) {
+ level = 0x10;
+ } else if (picture_size <= 73728) {
+ level = 0x11;
+ } else if (picture_size <= 122880) {
+ level = 0x20;
+ } else if (picture_size <= 245760) {
+ level = 0x21;
+ } else if (picture_size <= 552960) {
+ level = 0x30;
+ } else if (picture_size <= 983040) {
+ level = 0x31;
+ } else if (picture_size <= 2228224) {
+ level = 0x40;
+ } else if (picture_size <= 8912896) {
+ level = 0x50;
+ } else if (picture_size <= 35651584) {
+ level = 0x60;
+ } else {
+ goto error;
+ }
+ av_strlcatf(str, size, "vp09.%02x.%02x.%02x", profile, level, bitdepth);
+ return;
+error:
+ // Default to just vp9 in case of error while finding out profile or level
+ av_strlcpy(str, "vp9", size);
+ return;
+}
static void set_codec_str(AVFormatContext *s, AVCodecParameters *par,
char *str, int size)
{
@@ -180,7 +253,11 @@ static void set_codec_str(AVFormatContext *s,
AVCodecParameters *par,
// common Webm codecs are not part of RFC 6381
for (i = 0; codecs[i].id; i++)
if (codecs[i].id == par->codec_id) {
- av_strlcpy(str, codecs[i].str, size);
+ if (codecs[i].id == AV_CODEC_ID_VP9) {
+ set_vp9_codec_str(par, str, size);
+ } else {
+ av_strlcpy(str, codecs[i].str, size);
+ }
return;
}
--
2.7.4
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