Am 19.07.2013 02:26, schrieb James Board:
------------------------------------------------------------------------
*From:* Thomas <[email protected]>
*To:* "This list is about using libavcodec, libavformat, libavutil,
libavdevice and libavfilter." <[email protected]>
*Sent:* Thursday, July 18, 2013 8:55 AM
*Subject:* Re: [Libav-user] How to decode arbitrary frame
>You can use avformat_seek_file() followed by avcodec_flush_buffers()
before av_read_frame() to jump to an arbitrary position in the Stream.
Thank you. That works. But I have an question. Will
avformat_seek_file()
seek to the exact frame, or merely to the nearest key frame? I'm coding a
video editor and I need to seek to exact frames. My input
format, for now, are raw formats where all frames are stored in
full such as rawuyvy, or raw422P. Will avformat_seek_file()
seek to the exact frame in those raw formats
I'm reading raw rgb and uncompressed v210 in avi container. Here it
finds the correct frames when setting min_ts ts and max_ts to the same
value. With mov files avformat_seek_file() doesn't seem to work.
, and will it also seek to the exact frame if I use it on MPEG-type
formats?
I Diddnt try with interframe coded material, but i guess you can only
search for I-frames and you will need to decode the whole GOP to process
get to the frames inbetween.
Thank you.
_______________________________________________
Libav-user mailing list
[email protected]
http://ffmpeg.org/mailman/listinfo/libav-user
_______________________________________________
Libav-user mailing list
[email protected]
http://ffmpeg.org/mailman/listinfo/libav-user
