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FFmpeg libavfilter watermark ?
15 novembre 2011, par ÇetinSince the vhook subsystem has been removed from the latest version of FFMPEG, how can I add a watermark to a video?
the following software is installed on my server:
FFmpeg version SVN-r0.5.1-4:0.5.1-1ubuntu1 with libavfilter 0.4.0
for example: --> but this code does not work.
exec('ffmpeg -i 01.mpg -vfilters "movie=0:png:watermark.png [logo]; [in][logo] overlay=10:main_h-overlay_h-10 [out]" -f flv 03.flv');
Thanks,
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iPhone SDK - Converting .mov to .3gp
15 novembre 2011, par Lucas MoreiraI need to convert a video in format ".mov" to ".3gp". I searched on Google and I found some people saying to use ffmpeg.
I search a lot but I don't found any tutorial to how compile ffmpeg for iPhone then convert the video.
Has anyone what have done this or know any tutorial?
Thanks a lot.
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AMV video encoder ?
15 novembre 2011, par Shimmy -
Error installing ffmpeg on Ubuntu 8.04 JeOS with Speex
15 novembre 2011, par tubboI'm having an issue installing ffmpeg with Speex support on Ubuntu 8.04 JeOS. After some wandering around in dependency hell I managed to secure the proper libspeex and ffmpeg versions, and it
./configure
d properly, but when I try to runmake && make install
, it fails with the following error:ffmpeg.c: In function ‘opt_recording_timestamp’: ffmpeg.c:3080: warning: dereferencing type-punned pointer will break strict-aliasing rules ffmpeg.c: In function ‘opt_input_file’: ffmpeg.c:3312: warning: ‘loop_input’ is deprecated (declared at libavformat/avformat.h:919) ffmpeg.c: In function ‘opt_output_file’: ffmpeg.c:4086: warning: ‘loop_output’ is deprecated (declared at libavformat/avformat.h:895) ffmpeg.c: In function ‘opt_map’: ffmpeg.c:2873: warning: ‘sync_stream_idx’ may be used uninitialized in this function CC cmdutils.o LD ffmpeg_g libavcodec/libavcodec.a(libspeexdec.o): In function `libspeex_decode_close': /home/tom/src/ffmpeg/libavcodec/libspeexdec.c:144: undefined reference to `speex_header_free' libavcodec/libavcodec.a(libspeexenc.o): In function `encode_init': /home/tom/src/ffmpeg/libavcodec/libspeexenc.c:224: undefined reference to `speex_header_free' /home/tom/src/ffmpeg/libavcodec/libspeexenc.c:215: undefined reference to `speex_header_free' collect2: ld returned 1 exit status make: *** [ffmpeg_g] Error 1
I'm a complete noob to ffmpeg and speex, except for using the codec on Ventrilo back in the day. Can someone shed some light as to why this is happening?
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Flash Media Server Recording Delay
14 novembre 2011, par CoreyI have an application where a user can record themselves singing along to a song. Once I receive the NetStream status event 'Record.Start' I start playing an audio file. Once the audio completes, I stop recording. Next, I have a script that runs FFMPEG to combine the recorded video/audio with the same music file. The problem I'm finding is that there is a noticeable delay between the recorded audio and the music. It seems also that this delay depends on network speed as it varies depending on the network. Can I determine this delay through the FMS dynamically?