diff options
Diffstat (limited to 'libavdevice')
| -rw-r--r-- | libavdevice/decklink_common.h | 1 | ||||
| -rw-r--r-- | libavdevice/decklink_enc.cpp | 8 |
2 files changed, 7 insertions, 2 deletions
diff --git a/libavdevice/decklink_common.h b/libavdevice/decklink_common.h index 79d6ac5b38..088e165ee7 100644 --- a/libavdevice/decklink_common.h +++ b/libavdevice/decklink_common.h @@ -118,6 +118,7 @@ struct decklink_ctx { /* Status */ int playback_started; + int64_t first_pts; int64_t last_pts; unsigned long frameCount; unsigned int dropped; diff --git a/libavdevice/decklink_enc.cpp b/libavdevice/decklink_enc.cpp index fb686b9032..5a435ddc78 100644 --- a/libavdevice/decklink_enc.cpp +++ b/libavdevice/decklink_enc.cpp @@ -486,6 +486,9 @@ static int decklink_write_video_packet(AVFormatContext *avctx, AVPacket *pkt) ctx->frames_buffer_available_spots--; pthread_mutex_unlock(&ctx->mutex); + if (ctx->first_pts == AV_NOPTS_VALUE) + ctx->first_pts = pkt->pts; + /* Schedule frame for playback. */ hr = ctx->dlo->ScheduleVideoFrame((class IDeckLinkVideoFrame *) frame, pkt->pts * ctx->bmd_tb_num, @@ -505,14 +508,14 @@ static int decklink_write_video_packet(AVFormatContext *avctx, AVPacket *pkt) " Video may misbehave!\n"); /* Preroll video frames. */ - if (!ctx->playback_started && pkt->pts > ctx->frames_preroll) { + if (!ctx->playback_started && pkt->pts > (ctx->first_pts + ctx->frames_preroll)) { av_log(avctx, AV_LOG_DEBUG, "Ending audio preroll.\n"); if (ctx->audio && ctx->dlo->EndAudioPreroll() != S_OK) { av_log(avctx, AV_LOG_ERROR, "Could not end audio preroll!\n"); return AVERROR(EIO); } av_log(avctx, AV_LOG_DEBUG, "Starting scheduled playback.\n"); - if (ctx->dlo->StartScheduledPlayback(0, ctx->bmd_tb_den, 1.0) != S_OK) { + if (ctx->dlo->StartScheduledPlayback(ctx->first_pts * ctx->bmd_tb_num, ctx->bmd_tb_den, 1.0) != S_OK) { av_log(avctx, AV_LOG_ERROR, "Could not start scheduled playback!\n"); return AVERROR(EIO); } @@ -559,6 +562,7 @@ av_cold int ff_decklink_write_header(AVFormatContext *avctx) ctx->list_formats = cctx->list_formats; ctx->preroll = cctx->preroll; ctx->duplex_mode = cctx->duplex_mode; + ctx->first_pts = AV_NOPTS_VALUE; if (cctx->link > 0 && (unsigned int)cctx->link < FF_ARRAY_ELEMS(decklink_link_conf_map)) ctx->link = decklink_link_conf_map[cctx->link]; cctx->ctx = ctx; |