On Mon, 24 Aug 2020, lance.lmw...@gmail.com wrote:

From: Limin Wang <lance.lmw...@gmail.com>

Explain the reason in the commit message, e.g:

Some DVB and ATSC captures are using the official MPEG2 registration descriptor in addition to using the correct stream type and the AC-3_audio_stream_descriptor/AC3_descriptor. So let's add it even if it is not strictly needed for DVB/ATSC.


Signed-off-by: Limin Wang <lance.lmw...@gmail.com>
---
libavformat/mpegtsenc.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/libavformat/mpegtsenc.c b/libavformat/mpegtsenc.c
index 61fdd09..5a9e6fd 100644
--- a/libavformat/mpegtsenc.c
+++ b/libavformat/mpegtsenc.c
@@ -487,6 +487,10 @@ static int mpegts_write_pmt(AVFormatContext *s, 
MpegTSService *service)
        /* write optional descriptors here */
        switch (st->codecpar->codec_type) {
        case AVMEDIA_TYPE_AUDIO:
+            if (codec_id == AV_CODEC_ID_AC3)
+                put_registration_descriptor(&q, MKTAG('A', 'C', '-', '3'));
+            else if (codec_id == AV_CODEC_ID_EAC3)

"else" is not really needed, I'd rather avoid it for consistency with similar code below.

+                put_registration_descriptor(&q, MKTAG('E', 'A', 'C', '3'));

Otherwise LGTM.

Thanks,
Marton
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