FFMPEG - Not finding codec parameters

I'm trying to convert a sequence of images into a mpeg movie via FFMPEG, although I keep getting an error saying that it could not find the code parameters (Video: mjpeg). A Google search did not...

FFMPEG av_interleaved_write_frame(): Operation not permitted

Ok I receiving a 'av_interleaved_write_frame(): Operation not permitted' error while trying to encode an MOV file. Firstly I need to outline the conditions behind it. I am encoding 12 different...

Convert .mov to .mp4 and keep alpha channel using FFMPEG

I am trying to convert a .mov file that is Quicktime with Alpha Channel to a .mp4 movie. I am using FFMPEG and I can successfully convert the video to a .mp4 video, but I loose the alpha...

adding silent audio in ffmpeg

I'm trying to use ffmpeg to add a silent audio track to a MOV file. I created a silent audio track longer than the video, and intend to use the -shortest option with ffmpeg. Using SoX v14.3.1, I...

FFmpeg saving rtmp live stream cuts off after 3 minutes

I was playing with ffmpeg and was able to save a live stream to a file. The command to do so is: ffmpeg -re -i "rtmp://<ip addr>/livestream live=1" -f h264 test.flv However, I have tested this...

FFmpeg convert .mov to .ogv

I have some troubles converting my .mov to a .ogg file using FFmpeg. This command should work, right? ffmpeg -i test.mov -s 640x320 -vcodec libtheora -acodec libvorbis out.ogv It gives me this...

ffmpeg hangs when run in background

If I run ffmpeg as follows: ffmpeg -i H264-media-4.264 4.avi It works OK (i.e. 4.avi created OK). However, if I try to run it in background: ffmpeg -i H264-media-4.264 4.avi & it hangs! (and...

webm to mp4 conversion using ffmpeg

When I try to convert a webm file to mp4 the output is very very choppy and it appears as if many frames have been dropped by ffmpeg I used the following commands to convert ffmpeg -i movie.webm...

Audio is not playing properly in ffmpeg player

I need to create a player which will decrypt the input on-fly and play the content. I have choosen ffmpeg libs (libav*) to create player and to start I have followed this link but audio is not...

ffmpeg watermark from java Runtime.exec cannot find output

I'm having a problem in sending a ffmpeg command to add a watermark to my video from Java using Runtime.exec(). The strange thing is that the same command is working perfectly from terminal.......

Speed up start of a stream recording with ffmpeg

I try to record a video stream (from the web or a local webcam stream) and save it to a .mp4 / .flv file. I use FFmpeg with the version"N-59696-gc0a33c4". The problem isn't the recording of the...

Android ffmpeg Issue :- <filepath> : No such file or directory

I am using FFMPEG tool to merge IMAGE & AUDIO files. Its working only in SAMSUNG GALAXY TAB II. I had tried in many android devices & emulators but unfortunately it had not worked in any of...

ffmpeg missing blend filter

I am working on android project using ffmpeg library. I followed instruction from: https://github.com/guardianproject/android-ffmpeg to build ffmpeg library for android. All are OK. Now, i am...

Splitting webm video to png with transparency

I need to split a webm encoded video into png frames, without losing transparency. I use the following ffmpeg command: ffmpeg -i dancer1.webm -pix_fmt rgba frames/%04d.png This produces a...

Convert mp3 -> Video with static image ( ffmpeg/libav & BASH )

Some years ago I used the following bash script to get a video out of mp3's and one image (so the image in the video was freezed over the length of the mp3), which worked out fine. i=0; for file...

FFMPEG doesn't work with mp4 and stdout

I need to add text to mp4 video. If I write result to file then everything is OK, but I want to read data from ffmpeg stream. I run command: ffmpeg -i sample.mp4 -filter_complex...

FFmpeg audio channel rematrix (5.1 to stereo)

I've got a (very large!) Apple ProRes 422 file with 16ch audio. To be able to use it on a less powerful computer, I'd like to convert it to a standard MP4 file (h264 video codec, stereo audio)....

ALSA buffer xrun induced by low quality source in ffmpeg capture

I am attempting to transfer some old Video 8 tapes to my computer, though an EasyCap USB stick and the motherboard's sound line-in, on Ubuntu. I believe the arguments are correctly laid out below...

FFmpeg, error hardcoding subtitles

I'm trying to use ffmpeg to hardcode subtitles, but it gives this error: No such filter: 'subtitles' Error opening filters! My ffmpeg command and complete console...

debian ffmpeg webcam streaming to remote server error

I have a beaglebone black that I am trying to stream live video from, to an OSX computer. The streaming client potion seems to work if I point it to a local ffserver. [email protected]:~# ffmpeg -f...

ffmpeg : how to determine frame rate automatically?

I use this simple script to convert video to images using ffmpeg, but frame rate is fixed, how can I determine it...

How to save rtsp stream without packet loss by using FFMPEG

I am saving stream of live camera by using FFMPEG. When i am trying to save the video some data packets are loss so the video is not playing properly.I am using following FFMPEG Library The...

Android FFMPEG do nothing

I try to scale down video on Android device using FFMPEG. OnCreate of Activity where I call scaleVideo(), also initialization of FFMPEG and binaries load. private void scaleVideo(String path)...

Speeding up/slowing down video ffmpeg

I want to change video speed using ffmpeg framework. I used this command for that: ffmpeg -y -i /storage/extSdCard/Video/1.avi -filter_complex [0:v]fps=50.0, setpts=0.5*PTS[v];[0:a]atempo=2.0[a]...

Send chunks from MediaRecorder to server and play it back in the browser

With the following code in NodeJS I'm able to play a webm file served from server: app.get('/video', function(req, res){ res.writeHead(200,{ 'Connection': 'close', ...

Converting mkv to mp4 with ffmpeg sometimes loses video

How can I create a universal as possible command line to convert mkv to mp4? I fixed an issue where sometimes I'd lose audio (I think) and now I'm losing video. This is the command I currently use...

Improve ffmpeg x11grab screen capture performance

I have been doing screen-only (no sound) capture using ffmpeg with libx264 for the encoding quite successfully on an old machine built around a Core2 Quad Q6600 processor. I now need to include...

Anyone knows what might be the problem with this video output?

I am seeing the following scrambled output for a live stream when processing an udp input stream. I am using the recently downloaded ffmpeg from GIT. Stop and Start of ffmpeg command resolves the...

ffmpeg nvidia hwaccel yuv444p raw frame output

I use ffmpeg to do frame decimation, millions of video I have to use nvidia gpu card (tesla P4) to optimize performance my ffmpeg command is ffmpeg -hwaccel cuvid -c:v h264_cuvid -i...

ffmpeg: Can't convert file due to missing pixel format info?

I'm new to ffmpeg and i've been having problems converting this kux file to mp4. I've converted other kux files in the same way before without issues but it seems that this one isn't working...