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Code Issues Releases Wiki Activity

vd_lavc, ad_lavc: set pkt_timebase, not time_base

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These are different AVCodecContext fields. pkt_timebase is the correct
one for identifying the unit of packet/frame timestamps when decoding,
while time_base is for encoding. Some decoders also overwrite the
time_base field with some unrelated codec metadata.

pkt_timebase does not exist in Libav, so an #if is required.
This commit is contained in:
wm4 2016-08-29 12:46:12 +02:00
parent bda614bfd8
commit 0110b738d5
2 changed files with 8 additions and 2 deletions
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5
audio/decode/ad_lavc.c
View File

@ -103,7 +103,10 @@ static int init(struct dec_audio *da, const char *decoder)
lavc_context->refcounted_frames = 1;
lavc_context->codec_type = AVMEDIA_TYPE_AUDIO;
lavc_context->codec_id = lavc_codec->id;
lavc_context->time_base = ctx->codec_timebase;
#if LIBAVCODEC_VERSION_MICRO >= 100
lavc_context->pkt_timebase = ctx->codec_timebase;
#endif
if (opts->downmix && mpopts->audio_output_channels.num_chmaps == 1) {
lavc_context->request_channel_layout =

5
video/decode/vd_lavc.c
View File

@ -460,7 +460,10 @@ static void init_avctx(struct dec_video *vd, const char *decoder,
avctx->opaque = vd;
avctx->codec_type = AVMEDIA_TYPE_VIDEO;
avctx->codec_id = lavc_codec->id;
avctx->time_base = ctx->codec_timebase;
#if LIBAVCODEC_VERSION_MICRO >= 100
avctx->pkt_timebase = ctx->codec_timebase;
#endif
avctx->refcounted_frames = 1;
ctx->pic = av_frame_alloc();