Re: [FFmpeg-user] Output a sequence of images with known timings

On Wed, Nov 18, 2020 at 17:45:53 +, adam smith via ffmpeg-user wrote: > My issue is that the first image time varies depending on the output fps. > Eg fps=1/1 will output the first image from the 1st second of source; and so > on. > Fps=1/5 will output the first image from the 3rd second of t

Re: [FFmpeg-user] Subtitles disappear

On Mon, Jan 04, 2021 at 09:58:34 +0100, Michael Koch wrote: > For copying the subtitles from the input to the output, > -c:s copy > might work. I haven't tested it. Since MP4 only supports "timed text" subtitles, this will only work if the source MKV also contains this type of subtitles. Had Ceci

Re: [FFmpeg-user] Unable to play recorded audio and video from webcam using ffmpeg

Hi Vijay, On Sat, Jan 09, 2021 at 14:33:59 +0530, Vijay Rakesh Munganda wrote: > ffmpeg -f alsa -thread_queue_size 1024 -i hw:0 -f video4linux2 -i /dev/video0 > -c:a aac -t 0:10 -segment_time 00:00.040 > -f segment sample-%003d.aac -c:v libx264 -s:v 640x480 -t 0:10 -r 25 -g 1 > -segment_time 00:

Re: [FFmpeg-user] FFmpeg on Raspberry pi

On Thu, Jan 14, 2021 at 16:36:49 +, Simon Brown wrote: > I'm trying to decode video using the libav libraries. To test I'm running > ffmpeg with some options to see if it can run fast enough. [...] > ffmpeg version 4.1.6-1~deb10u1+rpt1 Copyright (c) 2000-2020 the FFmpeg Could you please run a

Re: [FFmpeg-user] minterpolate problem

On Wed, Jan 27, 2021 at 14:16:16 +, Phil Rhodes via ffmpeg-user wrote: > > I didn't know I could get help on individual filters.  > To be completely fair, that is actually in the docs, but it's not exactly on > the front page. Good point. It is at the very top of the output of "ffmpeg -h" t

Re: [FFmpeg-user] minterpolate ...for Paul

On Fri, Jan 29, 2021 at 20:16:12 -0500, Mark Filipak (ffmpeg) wrote: > Carl Eugen, it appears you're sniping at me. It appears you're throwing dirt > in the air in the hope that some of it will land on me. It appears that > you're trying to discredit me. Carl Eugen, the dirt lands on both of us. C

Re: [FFmpeg-user] Questions about "Cannot allocate memory"

On Sun, Jan 31, 2021 at 20:28:46 -0500, Mark Filipak (ffmpeg) wrote: > In lines like this: > "frame= 1588 fps=0.5 q=22.4 size= 23296kB time=00:01:06.02 > bitrate=2890.3kbits/s speed=0.0225x" > Regarding "frame=": > Why are many frame numbers repeated? > Why are many frame numbers skipped? >

Re: [FFmpeg-user] Script to time all encoders on a given machine?

On Sun, Feb 07, 2021 at 14:15:34 -0800, Steven Kan wrote: > for each $thisencoder in “ffmpeg -encoders” > time ffmpeg -i testfile.mp4 -vcodec $thisencoder out.mp4 (or whatever > extension is suitable) > results.txt > next $encoder > > with error checking, etc. > > Or would this not be useful

Re: [FFmpeg-user] Stack + resize + use audio from first video?

On Mon, Feb 08, 2021 at 13:00:15 -0600, Gilles wrote: > In one command, I'd like to stack two videos, resize them to the same > width+height, and use audio from the first video. Which of the below works for you? The first two, right? > #Stack > ffmpeg -i input0 -i input1 -filter_complex vstack=in

Re: [FFmpeg-user] compiling ffmpeg for nvidia gpu under Debian Bullseye

On Wed, Feb 10, 2021 at 13:53:32 -0500, Steve Newcomb wrote: > about what happened and how I eventually succeeded.  (I did everything as > superuser, so you won't see any "sudo" below.) I do see sudo below. And I don't see any reason to do any steps beyond installation as superuser or with sudo. D

Re: [FFmpeg-user] Re-writing hot .ts file that rotates every 24 hours in realtime

On Wed, Feb 17, 2021 at 22:18:00 -0800, Carl Zwanzig wrote: > On 2/15/2021 11:33 PM, Korn Moffle wrote: > > What I am trying to do: > > a. copy the file in realtime ? So, ffmpeg would be rewriting file1.ts into > > file2.ts as file1.ts is constantly being written into. > > What's the goal of that?

Re: [FFmpeg-user] Do I really need libaom?

On Tue, Feb 23, 2021 at 10:59:07 +0300, Alexander Dyagilev wrote: > But do I really need to encode? That depends on what you want to achieve. If you use the copy codec ("-c copy"), you get a much faster creation of the target file, but with unchanged codecs. You write: > to convert arbitrary vide

Re: [FFmpeg-user] Issue when adding a title to an audio stream within a mp4 file

On Wed, Feb 24, 2021 at 17:37:18 +0100, PPRJ01 wrote: > I observed that the command below seem to work properly when adding a title > to an audio stream within an MP4 file : > >   ffmpeg -i INPUT.mp4 -c copy -metadata:s:a:0 "title=mono" OUTPUT.mp4 > > Both VLC and Exiftool do display correctly

Re: [FFmpeg-user] aax to m4b with chapters

On Fri, Feb 26, 2021 at 12:30:10 +, Max Blindenhoefer wrote: > I read the Documentation, but didn’t understand everything. What am i > supposed to insert after the command „-map_chapters“ and what is > meant with „Input_file_index“? Th input file index is explained e.g. in this chapter: https

Re: [FFmpeg-user] Issue when adding a title to an audio stream within a mp4 file

On Mon, Mar 01, 2021 at 15:17:40 +0100, PPRJ01 wrote: > But ... I don't understand what you are planning to do. I'm not planning to do anything. I checked whether this could easily be fixed, but it cannot with my knowledge. > Please tell me if I'm right or wrong : > - ffprobe/ffmpeg will display

Re: [FFmpeg-user] repeat a frame

On Tue, Mar 02, 2021 at 17:32:42 -0500, Mark Filipak (ffmpeg) wrote: > Thank you, Jim. To the best of my knowledge, rational is not a 'C' datatype. No, but it is an ffmpeg data type, AVRational, as defined in libavutil/rational.h, along with functions to operate on this type. > I need to know the

Re: [FFmpeg-user] split files based on time

Hi Raj, On Tue, Mar 02, 2021 at 21:14:23 -0700, Raj Cryp wrote: > ffmpeg has the option to split file based on time. Say starting with time t > and go for length l. > > I am thinking of basically computing the time windows which will result in > the desired file size. Say a 1 min video of 20 MB wi

Re: [FFmpeg-user] .m3u8 video being downloaded converted to mp4 result in trouble

On Wed, Mar 03, 2021 at 22:35:56 +, Budi wrote: > Why did the .m3u8 video being downloaded converted outright to mp4 > result in lower resolution quality? > It's anyway either done by vlc or ffmpeg cli Pease show us te ffmpeg command you are using and its complete, uncust console output. Than

Re: [FFmpeg-user] repeat a frame

On Thu, Mar 04, 2021 at 03:57:38 -0500, Mark Filipak (ffmpeg) wrote: > Well, per rational.h, 'num' & 'den' are both integers. > > Now, I don't know how '72' is stored. Is it stored as an int64? They are defined as "int", which can be platform dependant. ffmpeg assumes/guarantees ints to be at

Re: [FFmpeg-user] How to get he total number of frames

On Tue, Mar 09, 2021 at 11:07:21 +0100, Ulf Zibis wrote: > Am 09.03.21 um 10:43 schrieb Ulf Zibis: > > I suspect that the last "progression" line shows the exact count, > > as it may only report the last progression state a few µs before > > the operation is completed. > > Can one please clarify th

Re: [FFmpeg-user] stream pre-encoded local files as a live source

On Sun, Dec 25, 2016 at 15:51:21 +0300, Egor Egorblch wrote: > I'd like to stream them to my home DLNA server as a live stream so > that I could watch them on my smart TV. Also, I don't want to re > encode them so that they all have the same container and codec. That actually calls for an actual

Re: [FFmpeg-user] [delogo @ 0x4bfaba0] Logo area is outside of the frame.

On Sun, Dec 25, 2016 at 09:15:20 -0700, Jim Worrall wrote: > > [zhouhong@localhost bin]$ /home/zhouhong/Downloads/ffmpeg-3.2/ffmpeg -y -i > > "/mnt/hgfs/downloads/light.mp4" -i "/mnt/hgfs/downloads/light.mp4" > > -filter_complex > > '[0:v]yadif,delogo=0:0:50:50:band=10,delogo=20:20:20:20:band=10

Re: [FFmpeg-user] Remove audio from DV file not working

On Mon, Dec 26, 2016 at 14:47:11 -0800, Tim Hiles wrote: > Output #0, dv, to 'noaudio.dv': > Metadata: > timecode: 00:33:32;19 > encoder : Lavf57.61.100 > Stream #0:0: Video: dvvideo, yuv411p, 720x480 [SAR 8:9 DAR 4:3], q=2-31, > 25000 kb/s, 29.97 fps, 29.97 tbr, 29.9

Re: [FFmpeg-user] Remove audio from DV file not working

On Mon, Dec 26, 2016 at 16:28:11 -0800, Tim Hiles wrote: > > On Mon, Dec 26, 2016 at 14:47:11 -0800, Tim Hiles wrote: > > > Output #0, dv, to 'noaudio.dv': > > > Metadata: > > > timecode: 00:33:32;19 > > > encoder : Lavf57.61.100 > > > Stream #0:0: Video: dvvideo, yuv4

Re: [FFmpeg-user] Error compiling FFmpeg under kdenlive

On Tue, Dec 27, 2016 at 20:19:55 +0100, Reindl Harald wrote: > > ERROR: libtheora not found > and what do you not understand in that message? Thomas did mention: > Please consider that I am not that sophisticated of a linux user. And he therefore did not understand that, to satisfy the dependency

Re: [FFmpeg-user] [delogo @ 0x4bfaba0] Logo area is outside of the frame.

On Tue, Dec 27, 2016 at 09:26:44 -0700, Jim Worrall wrote: > If I change the delogo to delogo=1:1:50:50, I don’t get the error. Since > there > is a default ‘band’ of 1 pixel, I guess using x=0, y=0, puts it out of the > frame. Indeed, there's code in there to show the given/used options (shown

Re: [FFmpeg-user] ffmpeg hls and 3 cookies

On Sun, Jan 01, 2017 at 16:19:14 +0100, Georg Stein SMC wrote: > Hello, > > ffmpeg -headers 'Cookie: > CloudFront-Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cHM6Ly9yZXBsYXkucGVyaXNjb3BlLnR2L3JaXzhYbk5yeVhWVnA3M2JKbG1OVlZ3RldkS0lDbTBNbHdyaGRPelBZMFY4b3lUM2ZfWl9nbkdiRVJ6NGhERDhzT3NsSFE1WEZTaU

Re: [FFmpeg-user] cutoff argument not passed to libmp3lame

On Wed, Dec 21, 2016 at 20:35:31 +0100, Bernhard Döbler wrote: > Am 20.12.2016 um 00:44 schrieb Moritz Barsnick: > > I can provide (and perhaps test) a simple patch to ffmpeg-devel, if > > nobody beats me to it. > > Please feel free :) I did, and cutoff support for libmp

Re: [FFmpeg-user] ffmpeg hls and 3 cookies

On Sun, Jan 01, 2017 at 17:49:59 +0100, Georg Stein SMC wrote: > this was the complete console output. That's peculiar. Every ffmpeg (called with your options) has a banner output such as this: ffmpeg version N-82963-g9ec52a0 Copyright (c) 2000-2016 the FFmpeg developers built with icc (ICC) 14

Re: [FFmpeg-user] ffmpeg hls and 3 cookies

On Tue, Jan 03, 2017 at 05:52:27 +0100, Georg Stein SMC wrote: > When i can get now a tip how to put hre header into the avformat with > c++, i would be very happy. you may want to ask on the libav-user mailing list, which handles programming with ffmpeg's libraries: https://lists.ffmpeg.org/mai

Re: [FFmpeg-user] ffmpeg -i mvc-stream2.m2ts = huge memory usage since vcodec/h2645_parse: Clear buffer padding

On Tue, Jan 03, 2017 at 02:35:20 +0100, Carl Eugen Hoyos wrote: > > This is a cut down version (29M) that still eats plenty of mem but > > not as extreme as the full version (which was only 120M). > I created ticket #6056, thank you for the sample! I think you meant #6057. ;-) Cheers, Moritz ___

Re: [FFmpeg-user] Stream UDP Multicast from Image

On Mon, Jan 02, 2017 at 16:50:51 -0200, Welisson Tomé wrote: > down, need to run again the line command as below; Please show us, along with the command line, the complete, uncut console output of your ffmpeg command. > but it's not gettng up where each 2 or 5 sec the stream goes down I don't r

Re: [FFmpeg-user] OpenEXR input with cropped data window produces black output

On Tue, Jan 03, 2017 at 11:56:06 +, Kevin Wheatley wrote: > dataWindow (type box2i): (873 318) - (1174 625) > displayWindow (type box2i): (0 0) - (1919 1079) "file" (the "magic" program) kindly reports these as well. > ffmpeg -y -loglevel debug -apply_trc linear -i /tmp/exr_test.%04d.exr > -c

Re: [FFmpeg-user] Stream UDP Multicast from Image

On Tue, Jan 03, 2017 at 12:30:37 -0200, Welisson Tomé wrote: > http://pastebin.com/YMzc0TVV The console *output* of the command as well please. If it's not thousands of lines long, please include both command and output in the email. If you don't know how to copy/paste the console output, you c

Re: [FFmpeg-user] ffmpeg -f avfoundation HELL - please help!

On Tue, Jan 03, 2017 at 16:55:47 +, Demián Andrés Rodriguez wrote: > > frame= 16 fps=1.7 q=0.0 Lsize= 998kB time=00:00:09.52 > > bitrate=858.9kbits/s speed=1.01x > > video:993kB audio:0kB subtitle:0kB other streams:0kB global headers:4kB [...] > > frame= 32 fps=3.7 q=0.0 size= 1k

Re: [FFmpeg-user] ffmpeg -f avfoundation HELL - please help!

On Tue, Jan 03, 2017 at 17:34:10 +, Demián Andrés Rodriguez wrote: > I hardly believe my cpu cannot encode vp9 properly, since cpu does not go > beyond 100% while using h264 uses more than 300% cpu. Well, the performance numbers I quoted certainly show that. Perhaps one of your components was

Re: [FFmpeg-user] ffmpeg -f avfoundation HELL - please help!

On Tue, Jan 03, 2017 at 19:01:35 +0100, Moritz Barsnick wrote: > "-scale 480x240" or insert the scale filter: "-vf scale=480:240" (or "-s 480x240" of course. D'uh, I never use it. ;-) ___ ffmpeg-user ma

Re: [FFmpeg-user] Stream UDP Multicast from Image

On Tue, Jan 03, 2017 at 17:56:37 -0200, Welisson Tomé wrote: > Here you go the report from ffmpeg output. > http://pastebin.com/u8dKf8MJ I asked you to post it here, but ... oh well. > ffmpeg version N-44806-g3553b81- http://johnvansickle.com/ffmpeg/ Copyright > (c) 2000-2015 the FFmpeg deve

Re: [FFmpeg-user] does flv support the metadata of rotation as mov ?

On Thu, Jan 05, 2017 at 15:08:09 +0800, qw wrote: > I have read the source code of movenc.c, which supports the metadata > of rotation. Does flv support 'rotation' like mov? From what I read in the FLV specification: https://www.adobe.com/content/dam/Adobe/en/devnet/flv/pdfs/video_file_format_spe

Re: [FFmpeg-user] Samsung HT-D330K codec issue

On Thu, Jan 05, 2017 at 15:15:47 +0200, Mike Stroud wrote: > Filename: WMV / DivX > File Extension: WMV / AVI > Bitrate: 4Mbps > Version: V1, V2, V3, V7 / DivX3.11 - DivX5.1 > Pixel: 720x480 > Sampling Frequency: 44.1 KHz - 48KHz > > ...none of which means a lot to me! File extension are the lett

Re: [FFmpeg-user] Samsung HT-D330K codec issue

On Fri, Jan 06, 2017 at 03:44:11 +0100, James Darnley wrote: > > * -b:a 4M # restrict the video bitrate to 4 Mbit/s > > I would suggest -vb (or -b:v in the modern parlance) to set the video > bitrate. Sorry, I did mean -b:v of course. Thanks, Moritz _

Re: [FFmpeg-user] Help with -video_size

On Fri, Jan 06, 2017 at 00:14:31 -0800, Tim Hiles wrote: > I've tried recording my screen set at 1366 x 768 and specified -video_size > to 1024x768. The command did create a recording however it did not change > the size. The output is below (further comments after the output). Can you be a bit mo

Re: [FFmpeg-user] Troube with piping into ffmpeg and fast seeking

On Sat, Jan 07, 2017 at 14:44:01 -0800, expenses wrote: > command I receive a couple of warning and errors:And nothing is output. And you were going to keep these warnings and errors a secret? Or you believe they don't mean anything? Please show us the actual ffmpeg command line you used, and its

Re: [FFmpeg-user] Why do these blank spots appear in spectrograms of converted youtube videos?

On Mon, Jan 09, 2017 at 09:51:34 +0800, Ethan Lewis wrote: > Thanks for suggestion but I do not have access to original audio as I > did not upload the videos myself. Well, you originally wrote: > I am confused why this is happening. Is it because of ffmpeg > conversion of m4a audio OR was it so

Re: [FFmpeg-user] Need help understanding framerate conversion!

On Fri, Jan 13, 2017 at 02:54:33 +, Matthias, Thomas wrote: > I’m clearly missing something here, but I have no idea why the audio > track would end up shorter (in the 10s example, it’s about 9.98 > seconds after), and the video longer (about 10.06). Thanks! (You should usually show us your co

Re: [FFmpeg-user] How can I Convert mpeg-dash files to mp4/mkv using FFMPEG?

On Sun, Jan 15, 2017 at 21:02:00 +0500, Saif Ullah wrote: > Recently I tried downloading a video file via a program called "video cache > view", it created two video files instead of one numbered as > mpegdashtmp1.mp4 which are i guess in some mpeg-dash format. I searched > about it and came to kno

Re: [FFmpeg-user] compile ffmpeg missing Xlib, or indevs is empty

On Mon, Jan 16, 2017 at 10:04:34 +0100, Reindl Harald wrote: > on Fedora "dnf install libX11-devel-1.6.3-3.fc24.x86_64" but since you > don#t find it worth to mention your operating system... Since you don't find it worth reading the OP's full email, let me quote: > $ cat /etc/debian_version > 8

Re: [FFmpeg-user] [ffplay] Trouble using concat protocol

On Mon, Jan 16, 2017 at 11:09:01 +, Jian Guo wrote: > http://devimages.apple.com.edgekey.net/streaming/examples/bipbop_4x3/gear3/prog_index.m3u8|http://devimages.apple.com.edgekey.net/streaming/examples/bipbop_4x3/gear0/prog_index.m3u8 > -bash: > http://devimages.apple.com.edgekey.net/streaming

Re: [FFmpeg-user] Intermittent error when segment files from concat

On Mon, Jan 16, 2017 at 14:52:09 -0600, Tung Tran wrote: > *Could not write header for output file #0 (incorrect codec parameters ?): > Invalid argumentStream mapping:* > > but sometime it worked just fine, same command, > Please give me some hits how to make it more stable. You need to read all

Re: [FFmpeg-user] Multiple lower transport protocols via rtsp_transport

On Wed, Jan 18, 2017 at 14:03:46 +, Alexey Vasilyev wrote: > I tried specifying "-rtsp_transport udp;tcp" and it takes only udp. > Any ideas? Good question. Since it's a flag, it should be possible with "-rtsp_transport udp+tcp" or "-rtsp_transport +udp+tcp" (Numerically, it would be a comb

Re: [FFmpeg-user] Help with extracting audio from MP4

On Thu, Jan 19, 2017 at 17:18:55 +1100, Peter wrote: > > Maybe you are searching for something like the following? > > $ ffmpeg -i 16187821_363927127308754_4400528164682465280_n.mp4 > > -acodec copy out.aac > > Thanks, I tried that. The sound is okay. No, the sound is not "okay", it should be *ex

Re: [FFmpeg-user] DrawText Not Drawing from top-left (0,0)

On Thu, Jan 19, 2017 at 14:31:30 -0800, dinizthiagobr wrote: > I figured out the first issue, android's rotation metadata was screwing > everything up, so I cleared all metadata then rotated accordingly to > original rotation metadata We might have figured it out, had you shown us the console outp

Re: [FFmpeg-user] Slow HLS Stream Download FFmpeg

On Thu, Jan 19, 2017 at 15:49:47 -0600, Gabriel Altabarani wrote: > I can successfully download a HLS stream from a .m3u8 link. However, the > problem that I am facing is extremely slow download speeds. When using > Streamlink I can download any stream at > least th

Re: [FFmpeg-user] Slow HLS Stream Download FFmpeg

On Fri, Jan 20, 2017 at 12:41:22 +0100, Carl Eugen Hoyos wrote: > You may want to download the parts of the hls stream and > concatenate them with "cat". > (Is there really no script that does this?) I have programmed, or rather hacked, such a downloader for myself. Before youtube-dl started handl

Re: [FFmpeg-user] DV to SD Blu-ray

On Fri, Jan 20, 2017 at 16:32:13 +0100, Terje J. Hanssen wrote: > Not any Blu-ray burners or suggestions how to use ffmpeg here? Possibly, > how to modify the LPCM audio syntax in 3) above? I couldn't find any more precise indicators on the required formats. I thought it could well be 24 bits ins

Re: [FFmpeg-user] ffmpeg armhf

On Thu, Jan 19, 2017 at 19:17:03 -0500, Isaac Lemus wrote: > While trying to configure the ffmpeg to use for building the opencv, I get > "C compiler test failed." > > Configure arguments were: > ./configure --enable-cross-compile --arch=armhf --target-os=linux > > Linux machine is running Ubuntu

Re: [FFmpeg-user] question regarding store_user_comments

On Wed, Jan 25, 2017 at 17:02:06 +0100, Julian Link wrote: > [jules@deepthought ffmpeg]$ ffmpeg -i > /media/120TB/hide/MXF_files/A019C046.mxf -an -f mxf_opatom > -store_user_comments 1 -b:v 36M -metadata comment_x=y out.mxf According to $ ffmpeg -h muxer=mxf_opatom the mxf_opatom muxer does *not

Re: [FFmpeg-user] Float formatting in drawtext

On Fri, Jan 27, 2017 at 11:05:04 +0100, Wolfgang Hugemann wrote: > So possibly there is another way to acchieve this? Could I for example > store a string in a user-defined frame-wise variable and display its > value by drawtext as is done when deciphering the VITC: I didn't take much of a look

Re: [FFmpeg-user] C920 h264 Problem

On Thu, Jan 26, 2017 at 14:25:13 +, Andy Furniss wrote: > Maybe what Jimmy is saying is you don't need -pix_fmt h264 as you > already have -input_format h264. If removing it gives the same logging > output then it's not needed. > > As has been said, you are getting compressed h264 from the cam

Re: [FFmpeg-user] -qscale:a and -write_xing 0 can't be used at same time?

On Fri, Jan 27, 2017 at 00:53:43 +0900, 桃源老師 wrote: > I found that the result mp3 shows twice long duration in macOS Finder > and iTunes. I googled and found that adding "-write_xing 0" fixes > this wrong duration. It would be interesting to see the different interpretations of durations in vario

Re: [FFmpeg-user] video's audio question

On Thu, Jan 26, 2017 at 20:56:48 -0700, JD wrote: > Have a video in which the audio's pitch (and speed) are just slightly > higher than normal. > How can I reduce the pitch and speed in small increments until I get it > right? The asetrate filter is designed for that: https://ffmpeg.org/ffmpeg-f

Re: [FFmpeg-user] ERROR: libx264 not found

On Thu, Jan 26, 2017 at 10:44:38 +, Vlad Rahmileviz wrote: > I'm trying to build FFMPEG with "--enable-libx264" option. > It fails on configure > ($ ./configure --enable-asm --enable-yasm --enable-shared --disable-static > --prefix=/c/ffmpeg --toolchain=msvc --arch=x86_64 --extra-cflags="-MD"

Re: [FFmpeg-user] ERROR: libx264 not found

On Sun, Jan 29, 2017 at 23:05:12 +0100, Carl Eugen Hoyos wrote: > Unrelated: > The following configure options have no effect, please remove them: > --enable-asm --enable-yasm --arch=x86_64 Apparently, the utilized command line is very similar (though not fully identical) to the Wiki entry: https:

Re: [FFmpeg-user] Size of cropped video segments

On Thu, Feb 09, 2017 at 09:39:13 -0500, Chao Zhou wrote: > > I expect the size of total 9 segments will be larger than the source video > > When encoding source video, the P/B frame can search previous full size I > frame to reduce their encoding size. After cropping, each of these video > segment

Re: [FFmpeg-user] ffmpeg git server misconfigured

On Thu, Feb 09, 2017 at 01:49:04 -0800, Andrew Robinson wrote: > So, I know git is working. But, when I tried to download a branch with > shallow copy the command fails. > > bash-4.3$ git clone --depth=1 --branch "n3.2.2" --single-branch > http://git.ffmpeg.org/ffmpeg ffmpeg > >

Re: [FFmpeg-user] gst-libav - 1.8.0 - Unknown OS 'linuxeabihf' error

On Wed, Feb 08, 2017 at 18:22:56 +0530, JEBARAJ SELVAPETER wrote: > getting the error log. Could you please help me to understand this? [...] > Include the log file "config.log" produced by configure as this will help > solve the problem. Can you please help me understand this sentence you quoted?

Re: [FFmpeg-user] ffmpeg git server misconfigured

On Fri, Feb 10, 2017 at 01:37:24 +0100, Carl Eugen Hoyos wrote: > >bash-4.3$ git clone --depth=1 --branch "n3.2.2" --single-branch > > http://git.ffmpeg.org/ffmpeg ffmpeg > > Does it work with source.ffmpeg.org? I can confirm it does; to be more precise, it works with git://source.ffmpeg.org

Re: [FFmpeg-user] Npm - videoshow taking long time to convert video from images

On Fri, Feb 10, 2017 at 12:25:38 +0530, Vivek Jain wrote: > I am trying to create video using npm-videoshow, but it appears to take > considerable time (~3 minutes for 14 minute video). Could someone please > advise how can the timing be improved. [...] > ffmpeg process started: ffmpeg -i > /var/fo

Re: [FFmpeg-user] Firefox supports MP4 FLAC

On Mon, Feb 13, 2017 at 11:43:29 +0100, Carl Eugen Hoyos wrote: > > $ ffmpeg -i a.flac -acodec copy -vn b.mp4 > > Complete, uncut console output missing / only > current git head supported on this mailing list. Or in other words: If you refer to the newest version of Firefox, you should also test

Re: [FFmpeg-user] eac3 encoding

On Mon, Feb 13, 2017 at 15:25:39 -0600, Mike Brown wrote: > What I haven't been able to find are the available bitrates for eac3. > Obviously the normal ac3 bitrates up through 640kbps, but I do not know > what is available higher than that. The 999k above is just a place holder. I don't see any

Re: [FFmpeg-user] eac3 encoding

On Mon, Feb 13, 2017 at 15:49:34 -0600, Mike Brown wrote: > > I don't see any restriction in the code, and the standard doesn't seem > > to imply any restriction either: > Thanks. I failed to look at dolby.com, but still needed to know if there > were any restrictions in the code. Sorry, I failed

Re: [FFmpeg-user] How to progressively save a file? -movflags faststart

On Tue, Feb 14, 2017 at 02:50:46 -0500, Osama Alshaykh wrote: > What is the best approach to progressively save a file while encoding? > I am encoding using x11grab and want to make sure there is an input file even > if the process is not gracefully closed (example stopping it using SIGKILL). S

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

On Fri, Feb 17, 2017 at 20:56:25 -0800, christina zou wrote: > 2. My ALSA bitrate is shown as 3072 kbps. This seems high - I only have a > Pi Zero. Is this a value I can manually set? Why is that high and why should a Pi not be able to handle a standard audio stream? 32 bits per sample, 48000 samp

Re: [FFmpeg-user] How do bitrate, FPS, and speed interact?

On Tue, Feb 21, 2017 at 19:03:09 -0800, christina zou wrote: > If I bump the bitrate to 1Mbps in both raspivid and FFMPEG, then FFMPEG's > stderr tells me that it hits 1Mbps, but the speed is reported around 0.67x > and my FPS is ~10, 2/3 of my target FPS. That probably means that encoding to 1 Mb

Re: [FFmpeg-user] -c:v or -vcodec copy or -codec:v

On Wed, Feb 22, 2017 at 04:58:12 -0800, DopeLabs wrote: > c:v is an abbreviated version of codec:v > vcodec is an alias of codec:v > > So all 3 function the same, but are not limited to 'copy' only. It is used to > specify the codec, or copy. (I don't find this confusing either. And the docs/wik

Re: [FFmpeg-user] Using the flags -movflags +faststart

On Fri, Feb 24, 2017 at 21:33:28 -0600, Reuben Martin wrote: > On Friday, February 24, 2017 8:36:05 PM CST JD wrote: > > I did not stop the encoding. > > Just opened another gnome-terminal and cd'd to the directory and > > tried to play the unfinished file. > > But now I see that I should not have

Re: [FFmpeg-user] Using the flags -movflags +faststart

On Fri, Feb 24, 2017 at 19:36:05 -0700, JD wrote: > I did not stop the encoding. > Just opened another gnome-terminal and cd'd to the directory and > tried to play the unfinished file. > But now I see that I should not have included the + sign for the > faststart. The '+' doesn't matter. You're m

Re: [FFmpeg-user] Using the flags -movflags +faststart

On Sat, Feb 25, 2017 at 15:41:39 +0100, Moritz Barsnick wrote: > The '+' sign in front of the flags is not going to work? I disagree. > ffmpeg's command line parser doesn't care whether the first flag is > prepended with a '+' or not: Actually, I found

Re: [FFmpeg-user] filter: subtitles and special chars

On Thu, Mar 02, 2017 at 21:21:01 +0100, Nicolas George wrote: > Hello. You just hijacked a thread. It is forbidden on this list. I > suggest you re-read the posting guidelines carefully in order to not do > anything forbidden again. Are you sure? I see no "In-Reply-To:" header. I do see a "Referen

Re: [FFmpeg-user] hflip so slooooooooow

On Thu, Mar 02, 2017 at 18:39:16 -0700, JD wrote: > Hi all, should horizontal flipping be as slow as this: > frame=27067 fps= 12 q=28.0 size= 143993kB time=00:18:06.27 > bitrate=1085.9kbits/s dup=0 drop=35 speed=0.47x How do these numbers compare to when you omit the filter? > the command was: >

Re: [FFmpeg-user] Converting raw h264 file to MP4

On Thu, Mar 02, 2017 at 15:49:27 +, Varad Gunjal wrote: > Hello. I am posting this question here as this was a suggestion in the > output message that I got while using ffmpeg. > > I have a file that has recorded an RTP stream in raw h264 format. > Unfortunately, the data was stored in an unkn

Re: [FFmpeg-user] h264_mp4toannexb unable to split h264_qsv-encoded files?

On Fri, Mar 03, 2017 at 15:21:43 +0100, Hugo Garbez wrote: > I tried the FFmpeg git version but I got the same problem. I can’t > spilt my file with "-hls_time 5". You can, but when copying, the hls muxer can only make a best effort to cut at keyframes. > $ ffmpeg -i input.mp4 -codec:v h264_qsv -

Re: [FFmpeg-user] Missing bitrate information on AAC encoded videos

On Sat, Mar 04, 2017 at 17:24:24 +0100, Marco wrote: > i use to encode the audio of my movie using libfdk_aac, but in the > result file doesn't appear the used bitrate (with mediainfo, ffprobe, > etc.). I encode using CBR mode, in general matroska container. Are you saying it also happens with ot

Re: [FFmpeg-user] Desktop Capture 'Jerky'

On Mon, Mar 06, 2017 at 13:22:51 +, derekg wrote: > Dear Carl Eugen , Why just him? ;) > addition of '--enable libasound' in the compilation stage . An ffmpeg > capture process successfully captures both video and sound , however > unsurprisingly on the older machine it is a little jerky .

Re: [FFmpeg-user] Desktop Capture 'Jerky'

On Mon, Mar 06, 2017 at 14:29:14 +, derekg wrote: > I apologise if not using the correct protocol and hope that I'm also > following the 'Top Posting' format correctly . No, that's just fine now. > bash script and about thirty (30) seconds of execution of that script > together with the 'ou

Re: [FFmpeg-user] Convert iPhone MOV to Android MP4

On Wed, Mar 08, 2017 at 18:16:52 +0100, Phillipe Laterrade wrote: > Subject: Re: [FFmpeg-user] Convert iPhone MOV to Android MP4 > Does anyone already experienced a wrong aspect ratio when encoding h264(sd, > 4:3) into an mxf container? > Using ffmpeg,it always sets the container aspect ratio to 1

Re: [FFmpeg-user] Convert iPhone MOV to Android MP4

On Thu, Mar 09, 2017 at 09:43:36 -0700, Richard Duran wrote: > Good point on that. I suppose my choice for MP4 output was somewhat > arbitrary. I was just looking at it as the default format used on Android. > I'll look into other formats that are compatible with PCM audio > and natively supported

Re: [FFmpeg-user] some question on how to use ffmpeg

On Mon, Mar 13, 2017 at 16:45:14 +0800, guanli wrote: > I encounter some question on how to use ffmpeg , request for your help ,The > problem I wrote it in the attachment! There are no attachments to your e-mail. Moritz ___ ffmpeg-user mailing list ffm

Re: [FFmpeg-user] Regarding using ffmpeg

On Wed, Mar 22, 2017 at 04:04:46 +, Alexandru Tudoran wrote: > I'm using ffmpeg encoder along with x264 on a raspberry pi to video stream > on a web application using NodeJS. The client side uses a JSMpeg decoder > which from what i read is a MPEG-1 decoder. You can't use x264 for that (and y

Re: [FFmpeg-user] Slight blur on converted video

On Mon, Mar 27, 2017 at 10:08:02 +0200, Carl Eugen Hoyos wrote: > Doesn't "-profile:v 3" increase the quality? > Please remove qscale from your command line, it has no effect on prores > encoding. From the Wiki: https://trac.ffmpeg.org/wiki/Encode/VFX#Prores From empirical testing we've found t

Re: [FFmpeg-user] Building Error avcodec_send_packet

On Mon, Mar 27, 2017 at 11:41:48 +0300, יוסף אלון wrote: > I would like to compile to following program: > With the flages: -lavcodec -lavutil -lavfilter -lavformat -lswscale -lz You have now asked on ffmpeg-user and ffmpeg-devel. Both are the wrong mailing lists for questions regarding developmen

Re: [FFmpeg-user] ffmpeg fails to compile with opencv of Fedora 25

On Sun, Mar 26, 2017 at 17:03:44 -0700, pgaltieri . wrote: > ERROR: opencv not found Someone else also encountered this: http://ffmpeg.org/pipermail/ffmpeg-devel/2017-March/209019.html > I don't know what the exact change is, but this code needs to be compiled > with g++ not gcc. If I correctly

Re: [FFmpeg-user] Synchronize video and audio from SDP file

On Mon, Mar 27, 2017 at 10:31:03 +, Jonathan Kanarek wrote: > ffmpeg -max_delay 5000 -reorder_queue_size 16384 -protocol_whitelist > file,crypto,udp,rtp -re -i input.sdp -vcodec copy -acodec aac -y output.mp4 > > I weird video that plays at each frame either the video or the audio but > neve

Re: [FFmpeg-user] ffplay on current build does not play mkv file but on old build does.

On Tue, Mar 28, 2017 at 01:33:15 -0700, Tim Hiles wrote: > Hi All! > > I'm revisiting this issue because I've finally had time to narrow down the > exact release where this issue first arose from so that perhaps someone who > understands the code could maybe figure out what may have happened. [...

Re: [FFmpeg-user] ffplay on current build does not play mkv file but on old build does.

On Tue, Mar 28, 2017 at 03:09:49 -0700, Tim Hiles wrote: > > $ ffmpeg -re -f lavfi -i testsrc2=s=1366x768:r=30,format=yuv420p -f sdl2 foo > Hi Moritz, Not sure what I supposed to see but I didn't see anything other > than the command window. It is supposed to open a playback window (with a generat

Re: [FFmpeg-user] H.265/HEVC for Premiere Pro compatibility

On Tue, Mar 28, 2017 at 10:25:44 -0800, Lou wrote: > On Tue, Mar 28, 2017, at 10:06 AM, Chris Colton wrote: > > If so, how do I copy that out of command prompt? > I don't know–I don't use Windows (I'm guessing that's what you're > using), but I'm sure you can find out how to copy and paste from cmd

Re: [FFmpeg-user] H.265/HEVC for Premiere Pro compatibility

On Tue, Mar 28, 2017 at 12:00:43 -0600, Chris Colton wrote: > On Tue, Mar 28, 2017 at 11:38 AM, Paul B Mahol wrote: > > Yes, I have an idea? Why you are asking Premiere question in FFmpeg > > mailing list? > I'm asking a Premiere question here because FFmpeg's implementation of HEVC > is the onl

Re: [FFmpeg-user] MLV-files

On Fri, Mar 31, 2017 at 12:11:56 +0200, Cecil Westerhof wrote: > Not much. With ffmpeg -codecs I did not see anything that seemed to > work with MLV. From what I can tell, that which ffmpeg supports is a format and not a codec - check "ffmpeg -formats". The codec may be something different inside?

Re: [FFmpeg-user] MLV-files

On Fri, Mar 31, 2017 at 18:31:36 +0100, Kieran O Leary wrote: > > From what I can tell, that which ffmpeg supports is a format and not a > > codec - check "ffmpeg -formats". The codec may be something different > > inside? > > Do you have samples you can share? (I'm too lazy to google.) > I linked

Re: [FFmpeg-user] T shirt

On Thu, Mar 30, 2017 at 15:33:46 -0400, David Whitaker wrote: > Hi, I am a big fan of ffmpeg, I like the logo so I decided to have a > single white t shirt with the logo printed for my self. The company I > asked to print for me wants me to have permission to use the logo > first. They're kidding,

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