Re: [FFmpeg-user] Android NDK r18b support
> > > > I'm using the following steps to cross-compile ffmpeg > Follow this: https://github.com/falahati1987/ffmpeg4Android Hope it would help - Davood Falahati > ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] probleme lors de la compilation de ffmpeg
Cher Chriistophe, > lors de la compilation de FFMPEG, nous avons des erreurs bloquantes. La langue officielle est l'anglais. Mais, pourqoui vous n'utilisez pas les pre-built FFMPEG executables? -Davood Falahati ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Autorotation issues - portrait orientation screen
>> So what I want is: >>Turn off the autorotation for files with >>rotation flag It's been a long time since ffmpeg automatically applies display_matrix side data to the video stream. Have you tried -noautorotate option in your script? Thank you, Davood Falahati ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] multithreaded use of sws_scale
I think this question is out of scope of ffmpeg community. You should ask it in libavuser instead. By the way, if you want to scale an AVFrame in various dimensions in different threads, you should instantiate various amounts of SwsContext. __ Tel: +98 (913) 126-0265 On Thu, Sep 14, 2017 at 10:44 PM, Martin Belleau < mbell...@capellasystems.net> wrote: > I see that sws_scale has srcSliceY and srcSliceH, which should allow to > perform scaling of different slices in parallel. > > Is there any sample code which demonstrates how to use it? > > Should the same SwsContext be used to scale all the slices? > > ___ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
[FFmpeg-user] FFMPEG sample example does not work!
Dear community, I am doing a video processing project with opencv and I have to read and write video/audio streams with ffmpeg. I found the ffmpeg-output-example useful, but I had a tough time to update it (I don't know the code is not updated while some parts of the code is deprecated!). I have uploaded my working code in: https://github.com/falahati1987/video/blob/master/ffmpeg-example.cpp When I run the code, I get the following error: [libx264 @ 0xee2400] broken ffmpeg default settings detected [libx264 @ 0xee2400] use an encoding preset (e.g. -vpre medium) [libx264 @ 0xee2400] preset usage: -vpre -vpre [libx264 @ 0xee2400] speed presets are listed in x264 --help [libx264 @ 0xee2400] profile is optional; x264 defaults to high My sample video specifications is : Output #0, mov, to '/home/dfalahati/Videos/melissa.MOV': Stream #0:0: Video: h264, yuv420p, 352x288, q=2-31, 400 kb/s, 25 tbc Stream #0:1: Audio: aac, 44100 Hz, 2 channels, 64 kb/s And I am using ffmpeg 2.8.11 on Ubuntu 16.04. I have not compiled ffmpeg from source. can anybody help me? Best, Davood Falahati ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Configure error with Android NDK clang compiler
I have not compiled FFMPEG for android using toolchain, however, I had a
tough time doing the same with opencv-JNI. This question, asked in
stackoverflow might help you.
http://stackoverflow.com/questions/34246265/opencv-ann-mlp-training-in-android
I read your ndk building procedure, don't you point Application.mk and
Android.mk files to your toolchain? I mean $NDK-PATH/ndk-build ? Are you
using gradle?
Davood Falahati,
Isfahan University of Technology.
d.falahati.1...@ieee.org
Every 3000 Sheets of paper costs us a tree.. Save trees... Conserve
Trees. Don't print this email or any files unless you really need to!
On Fri, Jan 15, 2016 at 2:21 AM, Marco Pracucci <marco.pracu...@spreaker.com
> wrote:
> I successfully build and run in production ffmpeg on Android (arm and x86)
> compiled with Android NDK's gcc. Recently, Android deprecated gcc and is
> pushing every dev to migrate to clang.
>
> I'm getting some issues while compiling ffmpeg with Android NDK's clang and
> this is the first one I encounter:
> *GNU assembler not found, install/update gas-preprocessor*
>
> Despite the message, looks that error is more subtle, because it fails
> while running "check_as" but if I run the same exact check command on the
> terminal, *it works*.
>
> Below you can find the full instructions to reproduce it (it fixes with
> --disable-asm but with gcc I'm able to compile with asm support).
>
> Versions:
> - ffmpeg 2.8.4
> - Compile on OSX 10.9.5
>
> *Download Android NDK*
> You can download the Android NDK from here:
> ​http://developer.android.com/ndk/downloads/index.html
>
> *Install Android NDK*
> Follow the installation instructions in the download and then set the
> environment variable NDK_DIR to the directory where you extracted the NDK.
>
> *Build NDK standalone toolchain*
> Define an environment variable TOOLCHAIN_DIR with the full path of the
> directory where the standalone toolchain should be installed. For example:
> export TOOLCHAIN_DIR=/tmp/toolchain
>
> Then build the toolchain:
> ${NDK_DIR}/build/tools/make-standalone-toolchain.sh \
> --toolchain=arm-linux-androideabi-clang3.6 \
> --platform=android-9 \
> --install-dir=${TOOLCHAIN_DIR}
>
> *Compile ffmpeg*
> I use the following configure script:
> ./configure \
> --enable-shared \
> --disable-static \
> --enable-gpl \
> --enable-version3 \
> --enable-nonfree \
> --disable-runtime-cpudetect \
> --disable-all \
> --disable-doc \
> --enable-avcodec \
> --enable-avformat \
> --enable-avutil \
> --enable-swresample \
> --disable-w32threads \
> --disable-os2threads \
> --disable-network \
> --disable-dxva2 \
> --disable-vaapi \
> --disable-vda \
> --disable-vdpau \
> --enable-protocol="file" \
> --enable-decoder="aac" \
> --enable-decoder="cook" \
> --enable-decoder="flac" \
> --enable-decoder="mp3" \
> --enable-decoder="mp3adu" \
> --enable-decoder="mp3adufloat" \
> --enable-decoder="mp3float" \
> --enable-decoder="mp3on4" \
> --enable-decoder="mp3on4float" \
> --enable-decoder="pcm_alaw" \
> --enable-decoder="pcm_bluray" \
> --enable-decoder="pcm_dvd" \
> --enable-decoder="pcm_f32be" \
> --enable-decoder="pcm_f32le" \
> --enable-decoder="pcm_f64be" \
> --enable-decoder="pcm_f64le" \
> --enable-decoder="pcm_lxf" \
> --enable-decoder="pcm_mulaw" \
> --enable-decoder="pcm_s16be" \
> --enable-decoder="pcm_s16be_planar" \
> --enable-decoder="pcm_s16le" \
> --enable-decoder="pcm_s16le_planar" \
> --enable-decoder="pcm_s24be" \
> --enable-decoder="pcm_s24daud" \
> --enable-decoder="pcm_s24le" \
> --enable-decoder="pcm_s24le_planar" \
> --enable-decoder="pcm_s32be" \
> --enable-decoder="pcm_s32le" \
> --enable-decoder="pcm_s32le_planar" \
> --enable-decoder="pcm_s8" \
> --enable-decoder="pcm_s8_planar" \
> --enable-decoder="pcm_u16be" \
> --enable-decoder="pcm_u16le" \
> --enable-decoder="pcm_u24be" \
> --enable-decoder="pcm_u24le" \
> --enable-decoder="pcm_u32be" \
> --enable-decoder="pcm_u32le" \
> --enable-decoder="pcm_u8" \
> --enable-decoder="pcm_zork" \
> --enable-decoder="ra_144" \
> --enable-decoder="ra_288" \
> --enable-decoder="ralf" \
> --enable-decoder="vorbis" \
> --enable-decoder="wmav1" \
> --enable-decoder="wmav2" \
> --enable-decoder="wmavoice"
Re: [FFmpeg-user] FFMPEG to Tangberg video conferencing
Moritz, Thank you for your reply. As I can see in device's web-page panel, here are the specifications about the device is attached to this mail. Device is called TANDBERG, sorry for the typo. It is a video conferencing device with complete sets of I/O peripherals. I need to connect to it with ffmpeg and see its content as well. Thank you, Davood Davood Falahati, Isfahan University of Technology. d.falahati.1...@ieee.org Every 3000 Sheets of paper costs us a tree.. Save trees... Conserve Trees. Don't print this email or any files unless you really need to! On Wed, Nov 18, 2015 at 12:38 AM, Moritz Barsnick <barsn...@gmx.net> wrote: > Hi Davood, > > On Tue, Nov 17, 2015 at 14:48:47 +0330, Davood Falahati wrote: > > > It occurred to me that I have a Tangberg video conferencing device and I > > want to connect to it with ffmpeg. All I know is it invokes h,323 on port > > 1720. Please tell me how. > > You need to be more specific, or fetch more information from the > documentation. How would users *not* using ffmpeg access the device? > > Possibly with something like "http://:1720", > which you could pass as input to ffmpeg. But how are we to know. Did > you happen to mention what the device is exactly called? > > Moritz > ___ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
[FFmpeg-user] FFMPEG to Tangberg video conferencing
Dear Community, It occurred to me that I have a Tangberg video conferencing device and I want to connect to it with ffmpeg. All I know is it invokes h,323 on port 1720. Please tell me how. B.R. Davood Falahati, Isfahan University of Technology. d.falahati.1...@ieee.org ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
[FFmpeg-user] FFMPEG in Android
Dear All, I wish to embed the precious ffmpeg in my android application. I found some documents over the Internet even though there were not responding to my needs which are listed as below: Firstly, I chiefly develop in Windows and the documents I read require to compile ffmpeg to empower android platform to get along with. The question is here: Is there any compiled binaries and/or libraries to waive the compilation? If so, please give me a hint of. Secondly, I am currently on Android Studio(AS) and Gradle How should I configure AS? Thank you in advance. Regards, Davood ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] hls_size
Thank you, I managed to do that finally. What is your recommendation for segment_length and list_size for a low-latency live broadcasting? Davood Falahati, PhD candidate in Isfahan University of Technology. d.falahati.1...@ieee.org On Fri, Mar 20, 2015 at 8:22 AM, Bogdan ioan Gabor bogdanioan.gabor-at-yahoo@ffmpeg.org wrote: Sorry, I meant g = segment_length * framerate On Friday, March 20, 2015 5:21 PM, Bogdan ioan Gabor bogdanioan.ga...@yahoo.com wrote: Hi, I had the same issue, and I managed to fix it by setting the framerate (-r parameter) and the GOP (-g parameter) which I think it depends on the framerate.So, for 3 seconds segments, I've used a framerate of 10 and a GOP of 30. I thought it's good/normal to have an I-Frame on every segment.My advise will be to just make sure that you have at least one I-Frame for each segment. g = segment_length + framerate. Good luck. On Saturday, March 14, 2015 9:16 PM, Davood Falahati d.falahati.1...@ieee.org wrote: I want to stream my capture card using HLS. I get the input well and everything seems to bo fine. The problem is the latency. I want to lessen the chunk sizes to 3 seconds or less, and put less than 5 chunks in every list. But when I run the ffmpeg as below: ffmpeg -re -i rtmp://serveradress/live/channel -codec copy -map 0 -f segment -segment_list playlist.m3u8 -delete -segment_list_flags +live -segment_time 3 out%03d.ts the generated segments are much longer than 3 seconds. I think the problem is with iFrames. How should I fix that issue? ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
[FFmpeg-user] hls_size
I want to stream my capture card using HLS. I get the input well and everything seems to bo fine. The problem is the latency. I want to lessen the chunk sizes to 3 seconds or less, and put less than 5 chunks in every list. But when I run the ffmpeg as below: ffmpeg -re -i rtmp://serveradress/live/channel -codec copy -map 0 -f segment -segment_list playlist.m3u8 -delete -segment_list_flags +live -segment_time 3 out%03d.ts the generated segments are much longer than 3 seconds. I think the problem is with iFrames. How should I fix that issue? ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
