0000122: avformat seek workaround

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Date Submitted

Last Update

0000122

Emotion Mediaplayer

[All Projects] Bug

public

2022-01-27 12:11

2022-05-20 12:56

Reporter

Goos McGuile

Assigned To

Goos McGuile

Priority

normal

Severity

minor

Reproducibility

always

Status

resolved

Resolution

fixed

Platform

All Platforms

OS Version

Product Version

1.10

Target Version

1.10

Fixed in Version

Summary

0000122: avformat seek workaround

Description

/* if seeking requested, we execute it */
     if (o->start_time != AV_NOPTS_VALUE) {
- ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, timestamp, 0);
+ int64_t seek_timestamp = timestamp;
+
+ if (!(ic->iformat->flags & AVFMT_SEEK_TO_PTS)) {
+ int dts_heuristic = 0;
+ for (i=0; i<ic->nb_streams; i++) {
+ AVCodecContext *avctx = ic->streams[i]->codec;
+ if (avctx->has_b_frames)
+ dts_heuristic = 1;
+ }
+ if (dts_heuristic) {
+ seek_timestamp -= 3*AV_TIME_BASE / 23;
+ }
+ }
+ ret = avformat_seek_file(ic, -1, INT64_MIN, seek_timestamp, seek_timestamp, 0);
         if (ret < 0) {
             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
                    filename, (double)timestamp / AV_TIME_BASE);

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Issue History
Date Modified	Username	Field	Change
2022-01-27 12:11	Goos McGuile	New Issue
2022-01-27 12:11	Goos McGuile	Status	new => assigned
2022-01-27 12:11	Goos McGuile	Assigned To	=> Goos McGuile
2022-05-20 12:56	Goos McGuile	Status	assigned => resolved
2022-05-20 12:56	Goos McGuile	Resolution	open => fixed