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motion: do not encode nal as first frame

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Joo Aun Saw 2019-10-24 10:59:40 +11:00
parent 4b5e40d430
commit 1dfff736aa
1 changed files with 75 additions and 0 deletions
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package/motion/2000-do-not-encode-nal-as-first-frame.patch Normal file
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@ -0,0 +1,75 @@
commit 6c47f0cded1ef1f119f91f2c6f572d6620776dff
Author: Joo Aun Saw <jasaw@dius.com.au>
Date: Wed Oct 23 10:45:13 2019 +1100
ffmpeg: do not encode NAL as the first video frame
diff --git a/src/ffmpeg.c b/src/ffmpeg.c
index 3af961a..76f3824 100644
--- a/src/ffmpeg.c
+++ b/src/ffmpeg.c
@@ -192,16 +192,17 @@ static void ffmpeg_free_nal(struct ffmpeg *ffmpeg){
}
}
-static void ffmpeg_encode_nal(struct ffmpeg *ffmpeg){
+static int ffmpeg_encode_nal(struct ffmpeg *ffmpeg){
// h264_v4l2m2m has NAL units separated from the first frame, which makes
// some players very unhappy.
if ((ffmpeg->pkt.pts == 0) && (!(ffmpeg->pkt.flags & AV_PKT_FLAG_KEY))) {
ffmpeg_free_nal(ffmpeg);
ffmpeg->nal_info_len = ffmpeg->pkt.size;
ffmpeg->nal_info = malloc(ffmpeg->nal_info_len);
- if (ffmpeg->nal_info)
+ if (ffmpeg->nal_info) {
memcpy(ffmpeg->nal_info, &ffmpeg->pkt.data[0], ffmpeg->nal_info_len);
- else
+ return 1;
+ } else
ffmpeg->nal_info_len = 0;
} else if (ffmpeg->nal_info) {
int old_size = ffmpeg->pkt.size;
@@ -210,6 +211,7 @@ static void ffmpeg_encode_nal(struct ffmpeg *ffmpeg){
memcpy(&ffmpeg->pkt.data[0], ffmpeg->nal_info, ffmpeg->nal_info_len);
ffmpeg_free_nal(ffmpeg);
}
+ return 0;
}
static int ffmpeg_timelapse_exists(const char *fname){
@@ -463,7 +465,10 @@ static int ffmpeg_encode_video(struct ffmpeg *ffmpeg){
}
if (ffmpeg->preferred_codec == USER_CODEC_V4L2M2M){
- ffmpeg_encode_nal(ffmpeg);
+ if (ffmpeg_encode_nal(ffmpeg)) {
+ // Throw special return code
+ return -2;
+ }
}
return 0;
@@ -489,7 +494,10 @@ static int ffmpeg_encode_video(struct ffmpeg *ffmpeg){
/* This kills compiler warnings. Nal setting is only for recent ffmpeg versions*/
if (ffmpeg->preferred_codec == USER_CODEC_V4L2M2M){
- ffmpeg_encode_nal(ffmpeg);
+ if (ffmpeg_encode_nal(ffmpeg)) {
+ // Throw special return code
+ return -2;
+ }
}
return 0;
@@ -529,7 +537,10 @@ static int ffmpeg_encode_video(struct ffmpeg *ffmpeg){
/* This kills compiler warnings. Nal setting is only for recent ffmpeg versions*/
if (ffmpeg->preferred_codec == USER_CODEC_V4L2M2M){
- ffmpeg_encode_nal(ffmpeg);
+ if (ffmpeg_encode_nal(ffmpeg)) {
+ // Throw special return code
+ return -2;
+ }
}
return 0;