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n0.7.12
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n0.7.9
n0.7.8
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n0.7.2
n0.7.1
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n0.6.6
n0.6.5
n0.6.4
ffmpeg-0.6.3
n0.5.15
n0.5.14
n0.5.13
n0.5.12
n0.5.11
n0.5.10
n0.5.9
n0.5.8
n0.5.7
n0.5.6
n0.5.5
N
2 Commits (d5bf704f507d75d3ca996703440b51a68b87d5ba)
2 Commits (d5bf704f507d75d3ca996703440b51a68b87d5ba)
| Author | SHA1 | Message | Date |
|---|---|---|---|
 Jonas Licht
|
59ad504696 |
libavformat/mov.c: use calculated dts offset when seeking in streams
Subtract the calculated dts offset from the requested timestamp before seeking. This fixes an error "Error while filtering: Operation not permitted" observed with a short file which contains only one key frame and starts with negative timestamps. Then, av_index_search_timestamp() returns a valid negative timestamp, but mov_seek_stream bails out with AVERROR_INVALIDDATA. Fixes ticket #6139. Signed-off-by: Jonas Licht <jonas.licht@fem.tu-ilmenau.de> Signed-off-by: Peter Große <pegro@friiks.de> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> |
7 years ago |
 Dale Curtis
|
37e8edc9f5 |
avformat/mov: Fix trampling of ctts during seeks when sidx support is enabled.
When sidx box support is enabled, the code will skip reading all trun boxes (each containing ctts entries for samples inthat box). If seeks are attempted before all ctts values are known, the old code would dump ctts entries into the wrong location. These are then used to compute pts values which leads to out of order and incorrectly timestamped packets. This patch fixes ctts processing by always using the index returned by av_add_index_entry() as the ctts_data index. When the index gains new entries old values are reshuffled as appropriate. This approach makes sense since the mov demuxer is already relying on the mapping of AVIndex entries to samples for correct demuxing. As a result of this all ctts entries are now 1-count. A followup change will be submitted to remove support for > 1 count entries which will simplify seeking. Notes for future improvement: Probably there are other boxes (stts, stsc, etc) that are impacted by this issue... this patch only attempts to fix ctts since it completely breaks packet timestamping. This patch continues using an array for the ctts data, which is not the most ideal given the rearrangement that needs to happen (via memmove as new entries are read in). Ideally AVIndex and the ctts data would be set-type structures so addition is always worst case O(lg(n)) instead of the O(n^2) that exists now; this slowdown is noticeable during seeks. Signed-off-by: Dale Curtis <dalecurtis@chromium.org> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> |
8 years ago |