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1 000 000 (wav version)
26 septembre 2011, par
Mis à jour : Avril 2013
Langue : English
Type : Audio
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Slicing an AVI file
7 novembre 2014, par Peter LurI am trying to upload only a certain part of an AVI file on the server without having to upload the whole file first.
If I set the slice to the beginning (byte : 0), I can read the resulting file no problem even if I slice it in any size. However if the slice start anywhere but not at byte 0, the file become unreadable. I guess this has something to do with the avi header/index being messed up. I was wondering maybe I could use ffmpeg to move the header or something ?
HTML Source
<code class="echappe-js"><script type="text/javascript"><br />
<br />
window.BlobBuilder = window.MozBlobBuilder || window.WebKitBlobBuilder || window.BlobBuilder;<br />
<br />
function sendRequest() {<br />
var blob = document.getElementById('fileToUpload').files[0];<br />
<br />
<br />
//Slicing parameters<br />
<br />
<br />
//#1: Starting at byte:0 = WORKING WELL<br />
var start = 0;<br />
var end = 1048576; // 1MB chunk sizes.<br />
<br />
<br />
//#2: Slicing the video file somewhere else (FAIL)<br />
<br />
/*<br />
var start = 1048576*3;<br />
var end = 1048576*4;<br />
*/<br />
<br />
<br />
var chunk = blob.slice(start, end, 'video/avi');<br />
uploadFile(chunk);<br />
<br />
}<br />
<br />
function fileSelected() {<br />
var file = document.getElementById('fileToUpload').files[0];<br />
if (file) {<br />
var fileSize = 0;<br />
if (file.size > 1024 * 1024)<br />
fileSize = (Math.round(file.size * 100 / (1024 * 1024)) / 100).toString() + 'MB';<br />
else<br />
fileSize = (Math.round(file.size * 100 / 1024) / 100).toString() + 'KB';<br />
<br />
document.getElementById('fileName').innerHTML = 'Name: ' + file.name;<br />
document.getElementById('fileSize').innerHTML = 'Size: ' + fileSize;<br />
document.getElementById('fileType').innerHTML = 'Type: ' + file.type;<br />
}<br />
}<br />
<br />
function uploadFile(blobFile) {<br />
//var file = document.getElementById('fileToUpload').files[0]; <br />
var fd = new FormData();<br />
fd.append("fileToUpload", blobFile);<br />
<br />
var xhr = new XMLHttpRequest();<br />
xhr.upload.addEventListener("progress", uploadProgress, false);<br />
xhr.addEventListener("load", uploadComplete, false);<br />
xhr.addEventListener("error", uploadFailed, false);<br />
xhr.addEventListener("abort", uploadCanceled, false);<br />
xhr.open("POST", "upload.php");<br />
xhr.onload = function(e) {<br />
//alert("loaded!");<br />
};<br />
<br />
xhr.send(fd);<br />
//alert("oen over");<br />
}<br />
<br />
function uploadProgress(evt) {<br />
if (evt.lengthComputable) {<br />
var percentComplete = Math.round(evt.loaded * 100 / evt.total);<br />
document.getElementById('progressNumber').innerHTML = percentComplete.toString() + '%';<br />
}<br />
else {<br />
document.getElementById('progressNumber').innerHTML = 'unable to compute';<br />
}<br />
}<br />
<br />
function uploadComplete(evt) {<br />
/* This event is raised when the server send back a response */<br />
//alert(evt.target.responseText);<br />
}<br />
<br />
function uploadFailed(evt) {<br />
alert("There was an error attempting to upload the file.");<br />
}<br />
<br />
function uploadCanceled(evt) {<br />
xhr.abort();<br />
xhr = null;<br />
//alert("The upload has been canceled by the user or the browser dropped the connection.");<br />
}<br />
</script>PHP Source (upload.php)
<?php
$tmp_name = $_FILES['fileToUpload']['tmp_name'];
$size = $_FILES['fileToUpload']['size'];
$name = $_FILES['fileToUpload']['name'];
$target_file = basename($name);
$complete = "complete.avi";
$com = fopen($complete, "ab");
// Open temp file
$out = fopen($target_file, "wb");
if ( $out ) {
// Read binary input stream and append it to temp file
$in = fopen($tmp_name, "rb");
if ( $in ) {
while ( $buff = fread( $in, 1048576 ) ) {
fwrite($out, $buff);
fwrite($com, $buff);
}
}
fclose($in);
fclose($out);
}
fclose($com);
?> -
Dockerized ffmpeg stops for no reason
2 mai 2023, par Arthur AttoutI'm trying to fire up a container that reads a video stream via
ffmpeg
and saves the stream as 30 seconds segments.

When I run the container, it stops after 20-ish seconds and returns with no error.


Here is my Dockerfile


FROM linuxserver/ffmpeg
ENTRYPOINT ffmpeg -i rtsp://192.168.1.85:8554/camera -f v4l2 -c copy -reset_timestamps 1 -map 0 -f segment -segment_time 30 -segment_format mp4 "output/out%03d.mp4" -loglevel debug



Here is the output when I run
sudo docker run -it --rm -v /data/camera:/output --name camera_recorder camera_recorder:latest


[+] Building 1.8s (5/5) FINISHED
 => [internal] load build definition from Dockerfile 0.3s
 => => transferring dockerfile: 777B 0.0s
 => [internal] load .dockerignore 0.5s
 => => transferring context: 2B 0.0s
 => [internal] load metadata for docker.io/linuxserver/ffmpeg:latest 1.2s
 => CACHED [1/1] FROM docker.io/linuxserver/ffmpeg@sha256:823c611e0af82b864608c21d96bf363403310d92f154e238f6d51fe3d783e53b 0.0s
 => exporting to image 0.1s
 => => exporting layers 0.0s
 => => writing image sha256:f0509ccf0b07ff53d4aafa0d3b80fd50ed53e96db906c9a1e0e8c44e163dce94 0.1s
 => => naming to docker.io/library/camera_recorder 0.0s
ffmpeg version 5.1.2 Copyright (c) 2000-2022 the FFmpeg developers
 built with gcc 11 (Ubuntu 11.3.0-1ubuntu1~22.04)
 configuration: --disable-debug --disable-doc --disable-ffplay --enable-ffprobe --enable-cuvid --enable-gpl --enable-libaom --enable-libass --enable-libfdk_aac --enable-libfreetype --enable-libkvazaar --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libxml2 --enable-libx264 --enable-libx265 --enable-libxvid --enable-nonfree --enable-nvdec --enable-nvenc --enable-opencl --enable-openssl --enable-small --enable-stripping --enable-vaapi --enable-vdpau --enable-version3
 libavutil 57. 28.100 / 57. 28.100
 libavcodec 59. 37.100 / 59. 37.100
 libavformat 59. 27.100 / 59. 27.100
 libavdevice 59. 7.100 / 59. 7.100
 libavfilter 8. 44.100 / 8. 44.100
 libswscale 6. 7.100 / 6. 7.100
 libswresample 4. 7.100 / 4. 7.100
 libpostproc 56. 6.100 / 56. 6.100
Splitting the commandline.
Reading option '-i' ... matched as input url with argument 'rtsp://192.168.1.85:8554/camera'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'v4l2'.
Reading option '-c' ... matched as option 'c' (codec name) with argument 'copy'.
Reading option '-reset_timestamps' ... matched as AVOption 'reset_timestamps' with argument '1'.
Reading option '-map' ... matched as option 'map' (set input stream mapping) with argument '0'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'segment'.
Reading option '-segment_time' ... matched as AVOption 'segment_time' with argument '30'.
Reading option '-segment_format' ... matched as AVOption 'segment_format' with argument 'mp4'.
Reading option 'output/out%03d.mp4' ... matched as output url.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set logging level) with argument debug.
Successfully parsed a group of options.
Parsing a group of options: input url rtsp://192.168.1.85:8554/camera.
Successfully parsed a group of options.
Opening an input file: rtsp://192.168.1.85:8554/camera.
[tcp @ 0x55c15e3eb040] No default whitelist set
[tcp @ 0x55c15e3eb040] Original list of addresses:
[tcp @ 0x55c15e3eb040] Address 192.168.1.85 port 8554
[tcp @ 0x55c15e3eb040] Interleaved list of addresses:
[tcp @ 0x55c15e3eb040] Address 192.168.1.85 port 8554
[tcp @ 0x55c15e3eb040] Starting connection attempt to 192.168.1.85 port 8554
[tcp @ 0x55c15e3eb040] Successfully connected to 192.168.1.85 port 8554
[rtsp @ 0x55c15e3e8300] SDP:
v=0
o=- 0 0 IN IP4 127.0.0.1
s=Stream
c=IN IP4 0.0.0.0
t=0 0
m=video 0 RTP/AVP 96
a=control:rtsp://192.168.1.85:8554/camera/trackID=0
a=rtpmap:96 MP4V-ES/90000
a=fmtp:96 config=000001B001000001B58913000001000000012000C48D88002D3C04871443000001B24C61766335392E33372E313030; profile-level-id=1

[rtsp @ 0x55c15e3e8300] video codec set to: mpeg4
[rtp @ 0x55c15e3ef600] No default whitelist set
[udp @ 0x55c15e3f0200] No default whitelist set
[udp @ 0x55c15e3f0200] end receive buffer size reported is 425984
[udp @ 0x55c15e3eff40] No default whitelist set
[udp @ 0x55c15e3eff40] end receive buffer size reported is 425984
[rtsp @ 0x55c15e3e8300] setting jitter buffer size to 500
[rtsp @ 0x55c15e3e8300] hello state=0
[rtsp @ 0x55c15e3e8300] Could not find codec parameters for stream 0 (Video: mpeg4, 1 reference frame, none(left), 1920x1080 [SAR 1:1 DAR 16:9], 1/5): unspecified pixel format
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, rtsp, from 'rtsp://192.168.1.85:8554/camera':
 Metadata:
 title : Stream
 Duration: N/A, bitrate: N/A
 Stream #0:0, 0, 1/90000: Video: mpeg4, 1 reference frame, none(left), 1920x1080 [SAR 1:1 DAR 16:9], 0/1, 5 tbr, 90k tbn
Successfully opened the file.
Parsing a group of options: output url output/out%03d.mp4.
Applying option f (force format) with argument v4l2.
Applying option c (codec name) with argument copy.
Applying option map (set input stream mapping) with argument 0.
Applying option f (force format) with argument segment.
Successfully parsed a group of options.
Opening an output file: output/out%03d.mp4.
Successfully opened the file.
[segment @ 0x55c15e415a80] Selected stream id:0 type:video
[segment @ 0x55c15e415a80] Opening 'output/out000.mp4' for writing
[file @ 0x55c15e42d840] Setting default whitelist 'file,crypto,data'
Output #0, segment, to 'output/out%03d.mp4':
 Metadata:
 title : Stream
 encoder : Lavf59.27.100
 Stream #0:0, 0, 1/10240: Video: mpeg4, 1 reference frame, none(left), 1920x1080 (0x0) [SAR 1:1 DAR 16:9], 0/1, q=2-31, 5 tbr, 10240 tbn
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
No more output streams to write to, finishing.:00.00 bitrate=N/A speed= 0x
[segment @ 0x55c15e415a80] segment:'output/out000.mp4' count:0 ended
[AVIOContext @ 0x55c15e42d8c0] Statistics: 292 bytes written, 2 seeks, 3 writeouts
frame= 0 fps=0.0 q=-1.0 Lsize=N/A time=00:00:00.00 bitrate=N/A speed= 0x
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Input file #0 (rtsp://192.168.1.85:8554/camera):
 Input stream #0:0 (video): 0 packets read (0 bytes);
 Total: 0 packets (0 bytes) demuxed
Output file #0 (output/out%03d.mp4):
 Output stream #0:0 (video): 0 packets muxed (0 bytes);
 Total: 0 packets (0 bytes) muxed
0 frames successfully decoded, 0 decoding errors



Additional info :


- 

- The stream is up and running.
ffplay rtsp://192.168.1.85:8554/camera
opens normally - The exact command (from
ENTRYPOINT
) on the host, works perfectly fine (it generates files for every 30 seconds). - From inside the container, I can ping 192.168.1.85 (it is actually
localhost
) - Setting
-analyzeduration 1000
does not fix the issue










Why is the container stopping for no reason ?


- The stream is up and running.