#3842: AAC (mp4a) DASH takes abnormally long to detect (~4 - 6s)
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Reporter: viperfx | Owner:
Type: defect | Status: new
Priority: normal | Component: avformat
Version: 2.2.4 | Resolution:
Keywords: mov | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by viperfx):
I should note that I am compiling FFmpeg on iOS so those flags I posted a
slightly different to what I have configured on the iOS app.
Snippet of the configure flags.
{{{
./configure --disable-programs --disable-shared --enable-static
--enable-pic --enable-small --enable-openssl ${DEBUG_CONFIG_ARGS} \
--disable-decoders --enable-decoder=aac --enable-decoder=h264
--enable-decoder=vorbis \
--disable-encoders --enable-encoder=aac \
--disable-demuxers --enable-demuxer=aac --enable-demuxer=mov
--enable-demuxer=matroska --enable-demuxer=h264 \
--disable-muxers --enable-muxer=mov --enable-muxer=mp4 --enable-
muxer=hls --enable-muxer=h264 \
--disable-filters --disable-doc
}}}
As gjdfgh said, I recieved a suggestion of disabling indexing to make the
seeking faster. It does indeed make the file open faster, almost instantly
through HTTP infact. However, the issue is that it thinks that the
duration of the file is 10s. It does not seem to detect the full duration.
Therefore, for a UI perspective I cannot seek the audio track since I do
not know the full duration of the file. The good thing is that the audio
plays till the end of the file.
cehoyos: The issue is that it does seek to the end of the file when
opening. This is evident when using ffmpeg -i to test with an HTTP URL
rather than a local file. Using avformat_open_input call, takes >~4s.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/3842#comment:10>
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