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| author | Sergey Svechnikov <svechnikov66@gmail.com> | 2019-04-22 22:26:24 +0500 |
|---|---|---|
| committer | Timo Rothenpieler <timo@rothenpieler.org> | 2019-04-23 12:59:44 +0200 |
| commit | fc630d7b437b754cc9d4a848d2b32b0ff8c1a7d7 (patch) | |
| tree | 5545d058f1d937829059faabc37278d7252fc2b4 /libavcodec | |
| parent | ee66e04bc9dbbcf95114a103f174ed54b2260758 (diff) | |
| download | ffmpeg-fc630d7b437b754cc9d4a848d2b32b0ff8c1a7d7.tar.gz | |
avcodec/cuviddec: improve progressive frame detection
There are 2 types of problems when using adaptive deinterlace with cuvid:
1. Sometimes, in the middle of transcoding, cuvid outputs frames with visible horizontal lines (as though weave deinterlace method was chosen);
2. Occasionally, on scene changes, cuvid outputs a wrong frame, which should have been shown several seconds before (as if the frame was assigned some wrong PTS value).
The reason is that sometimes CUVIDPARSERDISPINFO has property progressive_frame equal to 1 with interlaced videos.
In order to fix the problem we should check if the video is interlaced or progressive in the beginning of a video sequence (cuvid_handle_video_sequence).
And then we just use this information instead of the property progressive_frame in CUVIDPARSERDISPINFO (which is unreliable).
Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/cuviddec.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libavcodec/cuviddec.c b/libavcodec/cuviddec.c index 38623806fe..e922404dbe 100644 --- a/libavcodec/cuviddec.c +++ b/libavcodec/cuviddec.c @@ -70,6 +70,7 @@ typedef struct CuvidContext int deint_mode; int deint_mode_current; int64_t prev_pts; + int progressive_sequence; int internal_error; int decoder_flushing; @@ -228,6 +229,8 @@ static int CUDAAPI cuvid_handle_video_sequence(void *opaque, CUVIDEOFORMAT* form ? cudaVideoDeinterlaceMode_Weave : ctx->deint_mode; + ctx->progressive_sequence = format->progressive_sequence; + if (!format->progressive_sequence && ctx->deint_mode_current == cudaVideoDeinterlaceMode_Weave) avctx->flags |= AV_CODEC_FLAG_INTERLACED_DCT; else @@ -360,6 +363,9 @@ static int CUDAAPI cuvid_handle_picture_display(void *opaque, CUVIDPARSERDISPINF parsed_frame.dispinfo = *dispinfo; ctx->internal_error = 0; + // For some reason, dispinfo->progressive_frame is sometimes wrong. + parsed_frame.dispinfo.progressive_frame = ctx->progressive_sequence; + if (ctx->deint_mode_current == cudaVideoDeinterlaceMode_Weave) { av_fifo_generic_write(ctx->frame_queue, &parsed_frame, sizeof(CuvidParsedFrame), NULL); } else { |