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avconv: make output -ss insert trim/atrim filters.

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This makes output -ss sample-accurate for audio and will allow further
simplication in the future.
This commit is contained in:
Anton Khirnov 2013-04-10 15:02:01 +02:00
parent a83c0da539
commit 8cd472d3f9
3 changed files with 11 additions and 9 deletions
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3
Changelog
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@ -14,7 +14,8 @@ version 10:
- JPEG 2000 decoder
- new asetpts filter (same as setpts, but for audio)
- new trim and atrim filters
- avconv -t option is now sample-accurate when transcoding audio
- avconv -t and -ss (output-only) options are now sample-accurate when
transcoding audio
version 9:

5
avconv.c
View File

@ -681,11 +681,6 @@ static int poll_filter(OutputStream *ost)
av_rescale_q(of->start_time,
AV_TIME_BASE_Q,
ost->st->codec->time_base);
if (of->start_time && filtered_frame->pts < 0) {
av_frame_unref(filtered_frame);
return 0;
}
}
switch (ost->filter->filter->inputs[0]->type) {

8
avconv_filter.c
View File

@ -183,7 +183,7 @@ static int insert_trim(OutputStream *ost, AVFilterContext **last_filter, int *pa
char filter_name[128];
int ret = 0;
if (of->recording_time == INT64_MAX)
if (of->recording_time == INT64_MAX && !of->start_time)
return 0;
trim = avfilter_get_by_name(name);
@ -199,8 +199,14 @@ static int insert_trim(OutputStream *ost, AVFilterContext **last_filter, int *pa
if (!ctx)
return AVERROR(ENOMEM);
if (of->recording_time != INT64_MAX) {
ret = av_opt_set_double(ctx, "duration", (double)of->recording_time / 1e6,
AV_OPT_SEARCH_CHILDREN);
}
if (ret >= 0 && of->start_time) {
ret = av_opt_set_double(ctx, "start", (double)of->start_time / 1e6,
AV_OPT_SEARCH_CHILDREN);
}
if (ret < 0) {
av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name);
return ret;