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<div class="moz-cite-prefix">Am 19.07.2013 02:26, schrieb James
Board:<br>
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<hr size="1"> <font size="2" face="Arial"> <b><span
style="font-weight:bold;">From:</span></b> Thomas
<a class="moz-txt-link-rfc2396E" href="mailto:zengaja@gmx.de"><zengaja@gmx.de></a><br>
<b><span style="font-weight: bold;">To:</span></b> "This
list is about using libavcodec, libavformat, libavutil,
libavdevice and libavfilter."
<a class="moz-txt-link-rfc2396E" href="mailto:libav-user@ffmpeg.org"><libav-user@ffmpeg.org></a> <br>
<b><span style="font-weight: bold;">Sent:</span></b>
Thursday, July 18, 2013 8:55 AM<br>
<b><span style="font-weight: bold;">Subject:</span></b>
Re: [Libav-user] How to decode arbitrary frame<br>
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<div>>You can use avformat_seek_file() followed by
avcodec_flush_buffers() before av_read_frame() to jump
to an arbitrary position in the Stream.<br>
<br>
Thank you. That works. But I have an question. Will
avformat_seek_file()<br>
seek to the exact frame, or merely to the nearest key
frame? I'm coding a<br>
video editor and I need to seek to exact frames. My
input<br>
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format, for now, are raw formats where all frames are
stored in<br>
full such as rawuyvy, or raw422P. Will
avformat_seek_file()<br>
seek to the exact frame in those raw formats</div>
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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.<br>
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<div class="y_msg_container">, and will it also seek to the
exact frame if I use it on MPEG-type formats?<br>
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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.
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Thank you.<br>
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