diff mbox series

[FFmpeg-devel] avformat/movenc: fixed fmp4 packets containing incorrect flags after transcoding

Message ID tencent_1E31F589C228C615808F7D282FD95905F905@qq.com
State Accepted
Commit 734a61d282b9cfc89a1e4e7bb174d80f4cce3d88
Headers show
Series [FFmpeg-devel] avformat/movenc: fixed fmp4 packets containing incorrect flags after transcoding | expand

Checks

Context Check Description
andriy/make_x86 success Make finished
andriy/make_fate_x86 success Make fate finished

Commit Message

wangyaqiang April 10, 2023, 12:43 p.m. UTC
From: Wang Yaqiang <wangyaqiang03@kuaishou.com>

When write multi-trun box, the MOV_TRUN_FIRST_SAMPLE_FLAGS flag
need judge by first param, not 0.
If the original video contains consecutive I frames,
this will cause the packets of fmp4 have error sample_flags ,
and then incorrect keyframes were generated,
and then error packet will be seeked.

Signed-off-by: Wang Yaqiang <wangyaqiang03@kuaishou.com>
---
 libavformat/movenc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Steven Liu April 23, 2023, 1:54 a.m. UTC | #1
<1035567130@qq.com> 于2023年4月10日周一 20:43写道:
>
> From: Wang Yaqiang <wangyaqiang03@kuaishou.com>
>
> When write multi-trun box, the MOV_TRUN_FIRST_SAMPLE_FLAGS flag
> need judge by first param, not 0.
> If the original video contains consecutive I frames,
> this will cause the packets of fmp4 have error sample_flags ,
> and then incorrect keyframes were generated,
> and then error packet will be seeked.
>
> Signed-off-by: Wang Yaqiang <wangyaqiang03@kuaishou.com>
> ---
>  libavformat/movenc.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/libavformat/movenc.c b/libavformat/movenc.c
> index c370922c7d..946e79c5ac 100644
> --- a/libavformat/movenc.c
> +++ b/libavformat/movenc.c
> @@ -4858,8 +4858,8 @@ static int mov_write_trun_tag(AVIOContext *pb, MOVMuxContext *mov,
>          if (i > first && get_sample_flags(track, &track->cluster[i]) != track->default_sample_flags)
>              flags |= MOV_TRUN_SAMPLE_FLAGS;
>      }
> -    if (!(flags & MOV_TRUN_SAMPLE_FLAGS) && track->entry > 0 &&
> -         get_sample_flags(track, &track->cluster[0]) != track->default_sample_flags)
> +    if (!(flags & MOV_TRUN_SAMPLE_FLAGS) && track->entry > first &&
> +         get_sample_flags(track, &track->cluster[first]) != track->default_sample_flags)
>          flags |= MOV_TRUN_FIRST_SAMPLE_FLAGS;
>      if (track->flags & MOV_TRACK_CTTS)
>          flags |= MOV_TRUN_SAMPLE_CTS;
> --
> 2.39.2
>
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
> To unsubscribe, visit link above, or email
> ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".


Test ok here.


Thanks
Steven
Steven Liu April 24, 2023, 1:47 a.m. UTC | #2
Steven Liu <lingjiujianke@gmail.com> 于2023年4月23日周日 09:54写道:
>
> <1035567130@qq.com> 于2023年4月10日周一 20:43写道:
> >
> > From: Wang Yaqiang <wangyaqiang03@kuaishou.com>
> >
> > When write multi-trun box, the MOV_TRUN_FIRST_SAMPLE_FLAGS flag
> > need judge by first param, not 0.
> > If the original video contains consecutive I frames,
> > this will cause the packets of fmp4 have error sample_flags ,
> > and then incorrect keyframes were generated,
> > and then error packet will be seeked.
> >
> > Signed-off-by: Wang Yaqiang <wangyaqiang03@kuaishou.com>
> > ---
> >  libavformat/movenc.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/libavformat/movenc.c b/libavformat/movenc.c
> > index c370922c7d..946e79c5ac 100644
> > --- a/libavformat/movenc.c
> > +++ b/libavformat/movenc.c
> > @@ -4858,8 +4858,8 @@ static int mov_write_trun_tag(AVIOContext *pb, MOVMuxContext *mov,
> >          if (i > first && get_sample_flags(track, &track->cluster[i]) != track->default_sample_flags)
> >              flags |= MOV_TRUN_SAMPLE_FLAGS;
> >      }
> > -    if (!(flags & MOV_TRUN_SAMPLE_FLAGS) && track->entry > 0 &&
> > -         get_sample_flags(track, &track->cluster[0]) != track->default_sample_flags)
> > +    if (!(flags & MOV_TRUN_SAMPLE_FLAGS) && track->entry > first &&
> > +         get_sample_flags(track, &track->cluster[first]) != track->default_sample_flags)
> >          flags |= MOV_TRUN_FIRST_SAMPLE_FLAGS;
> >      if (track->flags & MOV_TRACK_CTTS)
> >          flags |= MOV_TRUN_SAMPLE_CTS;
> > --
> > 2.39.2
> >
> > _______________________________________________
> > ffmpeg-devel mailing list
> > ffmpeg-devel@ffmpeg.org
> > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> >
> > To unsubscribe, visit link above, or email
> > ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
>
>
> Test ok here.

Applied.

Thanks
Steven
diff mbox series

Patch

diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index c370922c7d..946e79c5ac 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -4858,8 +4858,8 @@  static int mov_write_trun_tag(AVIOContext *pb, MOVMuxContext *mov,
         if (i > first && get_sample_flags(track, &track->cluster[i]) != track->default_sample_flags)
             flags |= MOV_TRUN_SAMPLE_FLAGS;
     }
-    if (!(flags & MOV_TRUN_SAMPLE_FLAGS) && track->entry > 0 &&
-         get_sample_flags(track, &track->cluster[0]) != track->default_sample_flags)
+    if (!(flags & MOV_TRUN_SAMPLE_FLAGS) && track->entry > first &&
+         get_sample_flags(track, &track->cluster[first]) != track->default_sample_flags)
         flags |= MOV_TRUN_FIRST_SAMPLE_FLAGS;
     if (track->flags & MOV_TRACK_CTTS)
         flags |= MOV_TRUN_SAMPLE_CTS;