April 2015 - ffmpeg-user - lists.ffmpeg.org

cannot normalize MP4 from RTMP live recorded stream
by Madovsky 30 Apr '15

30 Apr '15

Hi, I just recorded some rtmp mp4 live stream from flash media server and concatenate on the fly the stream with server side function that append recorded stream to the current one. once done I can read the stream correctly from flash player but from other players (like VLC or ffplay) it's absolute crap. size is not respected and quality is awful, more, the concatenate file is not shown. so I tried to encode with ffmpeg but it says that "concatenated mp4 files is not supported correctly, patch welcome" the metadata is not caught by ffmpeg and the quality is still awful, even if I use -vcodec copy. sound is OK the command line I tried is ffmpeg -i test.mp4 -async 1 -vsync 1 -apad -vpad -acodec libfdk_aac -vcodec copy -crf 23 -y output.mp4 I can provide the video sample thanks Franck

1 0

Comparing keyframes of videos for proper alignment
by Joel Lopez 29 Apr '15

29 Apr '15

Hi, I'm trying to verify that the keyframes of videos we are using are properly aligned. I've found ffprobe to extract the some info but I'm not sure what data I should be comparing. This is so that we can do some adaptive bitrate switching using an SMIL file for RTMP, HLS and eventually MPEG-DASH. I've been reading that they keyframes should be a constant 3 seconds apart. Hopefully someone has some experience in this. [FRAME] media_type=video key_frame=1 pkt_pts=0 pkt_pts_time=0.000000 pkt_dts=0 pkt_dts_time=0.000000 best_effort_timestamp=0 best_effort_timestamp_time=0.000000 pkt_duration=100 pkt_duration_time=0.033333 pkt_pos=48 pkt_size=2950 width=1280 height=720 pix_fmt=yuv420p sample_aspect_ratio=N/A pict_type=I coded_picture_number=0 display_picture_number=0 interlaced_frame=0 top_field_first=0 repeat_pict=0 [/FRAME] [FRAME] media_type=video key_frame=0 pkt_pts=100 pkt_pts_time=0.033333 pkt_dts=100 pkt_dts_time=0.033333 best_effort_timestamp=100 best_effort_timestamp_time=0.033333 pkt_duration=100 pkt_duration_time=0.033333 pkt_pos=3136 pkt_size=140 width=1280 height=720 pix_fmt=yuv420p sample_aspect_ratio=N/A pict_type=B coded_picture_number=2 display_picture_number=0 interlaced_frame=0 top_field_first=0 repeat_pict=0 [/FRAME] [FRAME] media_type=video key_frame=0 pkt_pts=200 pkt_pts_time=0.066667 pkt_dts=200 pkt_dts_time=0.066667 best_effort_timestamp=200 best_effort_timestamp_time=0.066667 pkt_duration=100 pkt_duration_time=0.033333 pkt_pos=2998 pkt_size=138 width=1280 height=720 pix_fmt=yuv420p sample_aspect_ratio=N/A pict_type=P coded_picture_number=1 display_picture_number=0 interlaced_frame=0 top_field_first=0 repeat_pict=0 [/FRAME] [FRAME] media_type=video key_frame=0 pkt_pts=300 pkt_pts_time=0.100000 pkt_dts=300 pkt_dts_time=0.100000 best_effort_timestamp=300 best_effort_timestamp_time=0.100000 pkt_duration=100 pkt_duration_time=0.033333 pkt_pos=3414 pkt_size=140 width=1280 height=720 pix_fmt=yuv420p sample_aspect_ratio=N/A pict_type=B coded_picture_number=4 display_picture_number=0 interlaced_frame=0 top_field_first=0 repeat_pict=0 [/FRAME]

1 1

ffserver crashes from time to time
by En Figureo Canal 29 Apr '15

29 Apr '15

Hello. I've been testing ffserver and have noticed it crashes a lot. Sometimes crashed when the stop button is pressed while watching a video on VLC. Today I continued testing it and played a video using ffplay on a remote pc running Win7 and at the end of the video this is the error I received: Sun Apr 26 13:46:50 2015 172.16.254.19:49896 - - "PLAY >> marc-villa.sdp/streamid=1 RTP/UDP" > > Sun Apr 26 13:46:50 2015 Invalid interval end specification '' > > root@optimum-pbx:~# Sun Apr 26 14:22:00 2015 172.16.254.1 - - [] " >> RTP/UDP" 200 1179855479 > > *** glibc detected *** ./bin/ffserver: double free or corruption (!prev): >> 0x0b3f2480 *** > > ======= Backtrace: ========= > > /lib/i386-linux-gnu/i686/cmov/libc.so.6(+0x70c91)[0xb729ec91] > > /lib/i386-linux-gnu/i686/cmov/libc.so.6(+0x724f8)[0xb72a04f8] > > /lib/i386-linux-gnu/i686/cmov/libc.so.6(cfree+0x6d)[0xb72a363d] > > ./bin/ffserver[0x80b646c] > > /lib/i386-linux-gnu/i686/cmov/libc.so.6(__libc_start_main+0xe6)[0xb7244e46] > > ./bin/ffserver[0x80b7e5d] > > ======= Memory map: ======== > > 08048000-094a8000 r-xp 00000000 08:03 6831001 /root/bin/ffserver > > 094a8000-094c9000 rw-p 0145f000 08:03 6831001 /root/bin/ffserver > > 094c9000-09c23000 rw-p 00000000 00:00 0 > > 0b133000-0b6a1000 rw-p 00000000 00:00 0 [heap] > > 9a467000-ab087000 rw-p 00000000 00:00 0 > > b6500000-b6521000 rw-p 00000000 00:00 0 > > b6521000-b6600000 ---p 00000000 00:00 0 > > b6671000-b7209000 rw-p 00000000 00:00 0 > > b7209000-b720f000 r-xp 00000000 08:03 7614459 >> /usr/lib/i386-linux-gnu/libogg.so.0.8.0 > > b720f000-b7210000 rw-p 00005000 08:03 7614459 >> /usr/lib/i386-linux-gnu/libogg.so.0.8.0 > > b7210000-b722c000 r-xp 00000000 08:03 12451844 >> /lib/i386-linux-gnu/libgcc_s.so.1 > > b722c000-b722d000 rw-p 0001b000 08:03 12451844 >> /lib/i386-linux-gnu/libgcc_s.so.1 > > b722d000-b722e000 rw-p 00000000 00:00 0 > > b722e000-b738d000 r-xp 00000000 08:03 12583882 >> /lib/i386-linux-gnu/i686/cmov/libc-2.13.so > > b738d000-b738f000 r--p 0015f000 08:03 12583882 >> /lib/i386-linux-gnu/i686/cmov/libc-2.13.so > > b738f000-b7390000 rw-p 00161000 08:03 12583882 >> /lib/i386-linux-gnu/i686/cmov/libc-2.13.so > > b7390000-b7393000 rw-p 00000000 00:00 0 > > b7393000-b73aa000 r-xp 00000000 08:03 12451931 >> /lib/i386-linux-gnu/libz.so.1.2.7 > > b73aa000-b73ab000 r--p 00016000 08:03 12451931 >> /lib/i386-linux-gnu/libz.so.1.2.7 > > b73ab000-b73ac000 rw-p 00017000 08:03 12451931 >> /lib/i386-linux-gnu/libz.so.1.2.7 > > b73ac000-b73c7000 r-xp 00000000 08:03 7617425 >> /usr/lib/i386-linux-gnu/libtheoradec.so.1.1.4 > > b73c7000-b73c8000 r--p 0001a000 08:03 7617425 >> /usr/lib/i386-linux-gnu/libtheoradec.so.1.1.4 > > b73c8000-b73c9000 rw-p 0001b000 08:03 7617425 >> /usr/lib/i386-linux-gnu/libtheoradec.so.1.1.4 > > b73c9000-b740e000 r-xp 00000000 08:03 7617423 >> /usr/lib/i386-linux-gnu/libtheoraenc.so.1.1.2 > > b740e000-b740f000 ---p 00045000 08:03 7617423 >> /usr/lib/i386-linux-gnu/libtheoraenc.so.1.1.2 > > b740f000-b7410000 r--p 00045000 08:03 7617423 >> /usr/lib/i386-linux-gnu/libtheoraenc.so.1.1.2 > > b7410000-b7411000 rw-p 00046000 08:03 7617423 >> /usr/lib/i386-linux-gnu/libtheoraenc.so.1.1.2 > > b7411000-b743b000 r-xp 00000000 08:03 7614467 >> /usr/lib/i386-linux-gnu/libvorbis.so.0.4.5 > > b743b000-b743c000 r--p 00029000 08:03 7614467 >> /usr/lib/i386-linux-gnu/libvorbis.so.0.4.5 > > b743c000-b743d000 rw-p 0002a000 08:03 7614467 >> /usr/lib/i386-linux-gnu/libvorbis.so.0.4.5 > > b743d000-b743e000 rw-p 00000000 00:00 0 > > b743e000-b75a4000 r-xp 00000000 08:03 7614470 >> /usr/lib/i386-linux-gnu/libvorbisenc.so.2.0.8 > > b75a4000-b75b5000 r--p 00165000 08:03 7614470 >> /usr/lib/i386-linux-gnu/libvorbisenc.so.2.0.8 > > b75b5000-b75b6000 rw-p 00176000 08:03 7614470 >> /usr/lib/i386-linux-gnu/libvorbisenc.so.2.0.8 > > b75b6000-b75b8000 r-xp 00000000 08:03 12583885 >> /lib/i386-linux-gnu/i686/cmov/libdl-2.13.so > > b75b8000-b75b9000 r--p 00001000 08:03 12583885 >> /lib/i386-linux-gnu/i686/cmov/libdl-2.13.so > > b75b9000-b75ba000 rw-p 00002000 08:03 12583885 >> /lib/i386-linux-gnu/i686/cmov/libdl-2.13.so > > b75ba000-b75c1000 r-xp 00000000 08:03 12583897 >> /lib/i386-linux-gnu/i686/cmov/librt-2.13.so > > b75c1000-b75c2000 r--p 00006000 08:03 12583897 >> /lib/i386-linux-gnu/i686/cmov/librt-2.13.so > > b75c2000-b75c3000 rw-p 00007000 08:03 12583897 >> /lib/i386-linux-gnu/i686/cmov/librt-2.13.so > > b75c3000-b76a3000 r-xp 00000000 08:03 7606122 >> /usr/lib/i386-linux-gnu/libstdc++.so.6.0.17 > > b76a3000-b76a7000 r--p 000e0000 08:03 7606122 >> /usr/lib/i386-linux-gnu/libstdc++.so.6.0.17 > > b76a7000-b76a8000 rw-p 000e4000 08:03 7606122 >> /usr/lib/i386-linux-gnu/libstdc++.so.6.0.17 > > b76a8000-b76af000 rw-p 00000000 00:00 0 > > b76af000-b76c4000 r-xp 00000000 08:03 12583878 >> /lib/i386-linux-gnu/i686/cmov/libpthread-2.13.so > > b76c4000-b76c5000 r--p 00014000 08:03 12583878 >> /lib/i386-linux-gnu/i686/cmov/libpthread-2.13.so > > b76c5000-b76c6000 rw-p 00015000 08:03 12583878 >> /lib/i386-linux-gnu/i686/cmov/libpthread-2.13.so > > b76c6000-b76c9000 rw-p 00000000 00:00 0 > > b76c9000-b76ed000 r-xp 00000000 08:03 12583886 >> /lib/i386-linux-gnu/i686/cmov/libm-2.13.so > > b76ed000-b76ee000 r--p 00023000 08:03 12583886 >> /lib/i386-linux-gnu/i686/cmov/libm-2.13.so > > b76ee000-b76ef000 rw-p 00024000 08:03 12583886 >> /lib/i386-linux-gnu/i686/cmov/libm-2.13.so > > b76ef000-b7700000 r-xp 00000000 08:03 7617431 >> /usr/lib/i386-linux-gnu/libva.so.1.3200.0 > > b7700000-b7701000 r--p 00010000 08:03 7617431 >> /usr/lib/i386-linux-gnu/libva.so.1.3200.0 > > b7701000-b7702000 rw-p 00011000 08:03 7617431 >> /usr/lib/i386-linux-gnu/libva.so.1.3200.0 > > b7702000-b7706000 rw-p 00000000 00:00 0 > > b7710000-b7713000 rw-p 00000000 00:00 0 > > b7713000-b7714000 r-xp 00000000 00:00 0 [vdso] > > b7714000-b7730000 r-xp 00000000 08:03 12451845 /lib/i386-linux-gnu/ >> ld-2.13.so > > b7730000-b7731000 r--p 0001b000 08:03 12451845 /lib/i386-linux-gnu/ >> ld-2.13.so > > b7731000-b7732000 rw-p 0001c000 08:03 12451845 /lib/i386-linux-gnu/ >> ld-2.13.so > > bfdb5000-bfdd6000 rw-p 00000000 00:00 0 [stack] > > >> [1]+ Aborted ./bin/ffserver > > > Any idea what can be causing it to crash? Thanks for your time and help.

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Fwd: Getting green Images when compressing with ffmpeg for Android 5.0
by Manikanta Vasu 29 Apr '15

29 Apr '15

I am trying to fetch screenshots of android devices using adb screencap command along with the ffmpeg command. The command works well for devices other than Android 5.0 ffmpeg -loglevel panic -f rawvideo -pix_fmt bgr0 -r 10 -i - -vf scale=1 -f image2 -vcodec png -vframes 1 /sdcard/screen.png The issue is for Android 5.0 devices after every rendering of image ,a green image is coming. Regards Manikanta Vasu

2 2

streaming only audio from YouTube
by kath g 29 Apr '15

29 Apr '15

Hello Can we stream and save audio from YouTube using ffmpeg. The audio is about 10 hrs long. I use manjaro with ffmpeg. Thanks Kath Sent from Yahoo Mail on Android

3 2

ffmpeg not working on server
by Waleed Afridi 29 Apr '15

29 Apr '15

Hi I am using ffmpeg for video conversion, i already configure it on my locale server(WAMP) which work perfectly with shell_exec(escapeshellcmd(code)); For completed code PFA When i online that on dedicated server(linux) with path (Path to the binary: /usr/bin/ffmpeg ) It cannot convert video and also thumbnail, but generate empty video and blank image I already attached my locale(my locale setting.png) and online(Makechange.tv library.PNG) library installed info If my code is not correct for server than let me know the correct one. Thanks -- *Waleed Afridi* *Web Engineer* *Alliance IT Solutions* *Mob: 0333-9010689*

5 8

Hosting support response on ffmpeg not working on server
by Waleed Afridi 29 Apr '15

29 Apr '15

============================= FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers built on Jan 29 2012 17:52:15 with gcc 4.4.5 20110214 (Red Hat 4.4.5-6) configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --incdir=/usr/include --disable-avisynth --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --enable-avfilter --enable-avfilter-lavf --enable-libdc1394 --enable-libdirac --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-vdpau --enable-version3 --enable-x11grab libavutil 50.15. 1 / 50.15. 1 libavcodec 52.72. 2 / 52.72. 2 libavformat 52.64. 2 / 52.64. 2 libavdevice 52. 2. 0 / 52. 2. 0 libavfilter 1.19. 0 / 1.19. 0 libswscale 0.11. 0 / 0.11. 0 libpostproc 51. 2. 0 / 51. 2. 0 [flv @ 0x18b6670]Estimating duration from bitrate, this may be inaccurate Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 25.00 (25/1) Input #0, flv, from '20051210-w50s.flv': Metadata: duration : 17 width : 360 height : 288 videodatarate : 260 framerate : 25 videocodecid : 4 audiodatarate : 40 audiodelay : 0 audiocodecid : 2 canSeekToEnd : 1 creationdate : Fri Feb 03 11:52:46 2006 Duration: 00:00:16.92, start: 0.000000, bitrate: 306 kb/s Stream #0.0: Video: vp6f, yuv420p, 360x288, 266 kb/s, 25 tbr, 1k tbn, 1k tbc Stream #0.1: Audio: mp3, 22050 Hz, 2 channels, s16, 40 kb/s File '20051210-w50s.mp4' already exists. Overwrite ? [y/N] y [libx264 @ 0x18ba170]broken ffmpeg default settings detected [libx264 @ 0x18ba170]use an encoding preset (e.g. -vpre medium) [libx264 @ 0x18ba170]preset usage: -vpre <speed> -vpre <profile> [libx264 @ 0x18ba170]speed presets are listed in x264 --help [libx264 @ 0x18ba170]profile is optional; x264 defaults to high Output #0, mp4, to '20051210-w50s.mp4': Stream #0.0: Video: libx264, yuv420p, 360x288, q=2-31, 200 kb/s, 90k tbn, 25 tbc Stream #0.1: Audio: libfaac, 22050 Hz, 2 channels, s16, 64 kb/s Output #1, mjpeg, to '20051210-w50s.jpg': Stream #1.0: Video: mjpeg, yuvj420p, 360x288, q=2-31, 200 kb/s, 90k tbn, 1 tbc Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Stream #0.0 -> #1.0 Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height =================================== -- *Waleed Afridi* *Web Engineer* *Alliance IT Solutions* *www.waleedafridi.com <http://www.waleedafridi.com>* *Mob: 0333-9010689*

2 1

Broken installation after OSX update
by Joel Lopez 28 Apr '15

28 Apr '15

I seem to have broken my ffmpeg install on OSX after an update. But I can't remember if I compiled it or used homebrew to install it. How can uninstall and reinstall or repair it? Does it matter how it's removed? I now see this when I run the command: jlo-MacBook-Pro:~ jlopez$ ffmpeg -i -bash: ffmpeg: command not found If I run a locate ffmpeg I see it's in there: jlo-MacBook-Pro:~ jlopez$ locate ffmpeg /Applications/Google Chrome.app/Contents/Versions/43.0.2357.18/Google Chrome Framework.framework/Libraries/ffmpegsumo.so /Applications/Google Chrome.app/Contents/Versions/43.0.2357.37/Google Chrome Framework.framework/Libraries/ffmpegsumo.so /Applications/SlingplayerForChrome.app/Contents/Frameworks/Chromium Embedded Framework.framework/Libraries/ffmpegsumo.so /Library/Application Support/._ffmpegX /Library/Application Support/ffmpegX /Library/Application Support/ffmpegX/.DS_Store /Library/Application Support/ffmpegX/._mp2enc /Library/Application Support/ffmpegX/._tcextract /Library/Application Support/ffmpegX/._vcdxbuild /Library/Application Support/ffmpegX/._vcdxgen /Library/Application Support/ffmpegX/._yuvdenoise /Library/Application Support/ffmpegX/._yuvscaler /Library/Application Support/ffmpegX/._yuvtools.tgz /Library/Application Support/ffmpegX/gocr /Library/Application Support/ffmpegX/gocrfilter_en.sed /Library/Application Support/ffmpegX/gocrfilter_fr.sed /Library/Application Support/ffmpegX/gocrfilter_nl.sed /Library/Application Support/ffmpegX/gocrfilter_none.sed /Library/Application Support/ffmpegX/mencoder /Library/Application Support/ffmpegX/mp2enc /Library/Application Support/ffmpegX/mpeg2enc /Library/Application Support/ffmpegX/mplayer /Library/Application Support/ffmpegX/subtitle2pgm /Library/Application Support/ffmpegX/tcextract /Library/Application Support/ffmpegX/vcdxbuild /Library/Application Support/ffmpegX/vcdxgen /Library/Application Support/ffmpegX/yuvdenoise /Library/Application Support/ffmpegX/yuvscaler /Library/Application Support/ffmpegX/yuvtools.tgz /usr/local/Library/Formula/ffmpeg.rb /usr/local/Library/Formula/ffmpeg2theora.rb /usr/local/Library/Formula/ffmpegthumbnailer.rb /usr/local/Library/LinkedKegs/ffmpeg /usr/local/bin/ffmpeg /usr/local/opt/ffmpeg /usr/local/share/ffmpeg /usr/local/share/man/man1/ffmpeg-bitstream-filters.1 /usr/local/share/man/man1/ffmpeg-codecs.1 /usr/local/share/man/man1/ffmpeg-devices.1 /usr/local/share/man/man1/ffmpeg-filters.1 /usr/local/share/man/man1/ffmpeg-formats.1 /usr/local/share/man/man1/ffmpeg-protocols.1 /usr/local/share/man/man1/ffmpeg-resampler.1 /usr/local/share/man/man1/ffmpeg-scaler.1 /usr/local/share/man/man1/ffmpeg-utils.1 /usr/local/share/man/man1/ffmpeg.1 /usr/share/zsh/5.0.5/functions/_ffmpeg

5 8

difference in timing (instead of record duration in seconds) ...
by Albretch Mueller 28 Apr '15

28 Apr '15

Say, you need just a segment of a video from after the first five minutes and a half ("00:05:30") for an hour fifteen minutes and twenty seconds from time 0 (not after start of desired segment) have passed ("01:15:20") How can you do that? avconv has just an option for recording duration not time difference lbrtchx ffmpeg-user(a)ffmpeg.org: difference in timing (instead of record duration in seconds) ...

3 2

play raw h.264 - timing between frames
by Ran Shalit 28 Apr '15

28 Apr '15

Hello, I would like to ask how FFmpeg ffplay knows the correct timing between frames in raw h.264 file ? Thank you! Ran

2 1