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Richard Stallman et le logiciel libre
19 octobre 2011, par
Mis à jour : Mai 2013
Langue : français
Type : Texte
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Sur d’autres sites (5726)
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Buffer as input and output for fluent-ffmpeg
9 septembre 2022, par nickcoding2The below looks like a lot but a it's primarily just output.


I'm trying to take in a buffer using multer (being send the request containing the video (.mov format) through Alamofire from an iPhone) as the input before a fluent-ffmpeg conversion, then I want it to output as a buffer, and then send the result to S3. I think I'm close, but I don't think fluent-ffmpeg can have a buffer passed in. This is deployed on heroku using this buildpack : https://github.com/jonathanong/heroku-buildpack-ffmpeg-latest.... How do I pass it in correctly ?


const multer = require('multer')
const upload = multer({ limits: { fieldSize: 100_000_000 } })
app.post('/create', upload.single('video'), async function (request, response, next) {
 let data = request.body
 console.log(data) // prints [Object: null prototype] { param1: '' }
 let bufferStream = new stream.PassThrough();
 console.log(request.file.buffer) // prints '<buffer 00="00" 14="14" 66="66" 74="74" 79="79" 70="70" 71="71" 20="20" 08="08" 77="77" 69="69" 64="64" 65="65" 01="01" 0e="0e" 28="28" 55="55" 6d="6d" 61="61" 21="21" 03="03" 40="40" 68="68" 1c="1c" 4e="4e" ff="ff" 3c="3c" 59="59" 96="96" 7c="7c" 82="82" 17718642="17718642" more="more" bytes="bytes">'

 new ffmpeg({
 source: stream.Readable.from(request.file.buffer, { objectMode: false })
 })
 // .format('mp4')
 .on('error', function (err) {
 console.log(Error: ${err})
 })
 .on('progress', function (progress) {
 console.log("progress")
 })
 .on('end', function () {
 console.log('Formatting finished!');
 console.log("after");
 })
 .writeToStream(bufferStream);

 // Read the passthrough stream
 const buffers = [];
 bufferStream.on('data', function (buf) {
 buffers.push(buf);
 });
 bufferStream.on('end', function () {
 const outputBuffer = Buffer.concat(buffers);
 // use outputBuffer
 });
 console.log("Added.")
 response.send("Success")
});
</buffer>

The output is what you can see below (without .format('mp4')) :


2022-09-03T13:12:24.194384+00:00 heroku[router]: at=info method=POST path="/createBusiness" host=sparrow-testing.herokuapp.com request_id=2774a4ec-e21e-4c2f-8086-460a4cba7d1d fwd="74.71.236.5" dyno=web.1 connect=0ms service=13157ms status=200 bytes=762 protocol=https
2022-09-03T13:12:24.186257+00:00 app[web.1]: [Object: null prototype] { title: '' }
2022-09-03T13:12:24.187296+00:00 app[web.1]: <buffer 00="00" 14="14" 66="66" 74="74" 79="79" 70="70" 71="71" 20="20" 08="08" 77="77" 69="69" 64="64" 65="65" 01="01" 0e="0e" 28="28" 55="55" 6d="6d" 61="61" 21="21" 03="03" 40="40" 68="68" 1c="1c" 4e="4e" ff="ff" 3c="3c" 59="59" 96="96" 7c="7c" 82="82" 17718642="17718642" more="more" bytes="bytes">
2022-09-03T13:12:24.189891+00:00 app[web.1]: Added.
2022-09-03T13:12:24.891564+00:00 app[web.1]: Error: Error: ffmpeg exited with code 1: pipe:1: Invalid argument
2022-09-03T13:12:24.891570+00:00 app[web.1]: 
</buffer>

This output is what you see with .format('mp4') :


2022-09-03T13:17:07.380415+00:00 app[web.1]: [Object: null prototype] { title: '' }
2022-09-03T13:17:07.381335+00:00 app[web.1]: <buffer 00="00" 14="14" 66="66" 74="74" 79="79" 70="70" 71="71" 20="20" 08="08" 77="77" 69="69" 64="64" 65="65" 01="01" 0e="0e" 28="28" 55="55" 6d="6d" 61="61" 21="21" 03="03" 40="40" 68="68" 1c="1c" 4e="4e" ff="ff" 3c="3c" 59="59" 96="96" 7c="7c" 82="82" 17718642="17718642" more="more" bytes="bytes">
2022-09-03T13:17:07.384047+00:00 app[web.1]: Added.
2022-09-03T13:17:07.388457+00:00 heroku[router]: at=info method=POST path="/createBusiness" host=sparrow-testing.herokuapp.com request_id=84e69ead-09b1-4668-8fc8-b9fc9d5f229d fwd="74.71.236.5" dyno=web.1 connect=0ms service=13079ms status=200 bytes=762 protocol=https
2022-09-03T13:17:08.339746+00:00 app[web.1]: Error: Error: ffmpeg exited with code 1: Conversion failed!
2022-09-03T13:17:08.339783+00:00 app[web.1]: 
</buffer>

My uploadFile function works correctly because I use it elsewhere—normally, I just pass in the request.file.buffer, but here it needs to be a buffer after the ffmpeg conversion


EDIT :


At Heiko's suggestion, I tried changing the multer initialization to


multer({ limits: { fieldSize: 100_000_000 }, dest: "uploads/" })


and the source I was passing in to ffmpeg to


new ffmpeg({
 source: request.file.path // request.file.path seems to be a path of a Multer-generated file, I'd assume the one I'm sending to the server
})
.format('mp4')


but it still errored out to


Error: ffmpeg exited with code 1: Conversion failed!


when the request.file was :


{
 fieldname: 'video',
 originalname: 'video',
 encoding: '7bit',
 mimetype: 'clientMime',
 destination: 'uploads/',
 filename: '08d5d3bbdcf1ac29fb97800136a306e9',
 path: 'uploads/08d5d3bbdcf1ac29fb97800136a306e9',
 size: 1567480
}


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Appium screen recording doesn't work on simulator
31 août 2022, par OksI'm running automation tests on simulator and trying to record screen but it crashes on line
driver.start_recording_screen()
I'm using Python for testing and Flutter for client side.

self.utils.driver.switch_to_native_context()
driver.start_recording_screen()


Appium logs :


[ffmpeg] ffmpeg version 5.1 Copyright (c) 2000-2022 the FFmpeg developers
[ffmpeg] built with Apple clang version 13.1.6 (clang-1316.0.21.2.5)
[ffmpeg] configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/5.1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-neon
[ffmpeg] 
[ffmpeg] libavutil 57. 28.100 / 57. 28.100
[ffmpeg] libavcodec 59. 37.100 / 59. 37.100
[ffmpeg] libavformat 59. 27.100 / 59. 27.100
[ffmpeg] libavdevice 59. 7.100 / 59. 7.100
[ffmpeg] libavfilter 8. 44.100 / 8. 44.100
[ffmpeg] libswscale 6. 7.100 / 6. 7.100
[ffmpeg] libswresample 4. 7.100 / 4. 7.100
[ffmpeg] 
[ffmpeg] libpostproc 56. 6.100 / 56. 6.100
[ffmpeg] 
[ffmpeg] [mjpeg @ 0x148605ab0] No JPEG data found in image
[ffmpeg] 
[ffmpeg] [mjpeg @ 0x14b104080] Could not find codec parameters for stream 0 (Video: mjpeg, none(bt470bg/unknown/unknown)): unspecified size
[ffmpeg] Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
[ffmpeg] Input #0, mjpeg, from '********':
[ffmpeg] Duration: N/A, bitrate: N/A
[ffmpeg] Stream #0:0: Video: mjpeg, none(bt470bg/unknown/unknown), 25 tbr, 1200k tbn
[ffmpeg] 
[ffmpeg] Stream mapping:
[ffmpeg] Stream #0:0 -> #0:0 (mjpeg (native) -> mjpeg (native))
[ffmpeg] Press [q] to stop, [?] for help
[ffmpeg] [mjpeg @ 0x14b004620] No JPEG data found in image
[ffmpeg] Error while decoding stream #0:0: Invalid data found when processing input
[ffmpeg] Cannot determine format of input stream 0:0 after EOF
[ffmpeg] Error marking filters as finished
[ffmpeg] Conversion failed!
[ffmpeg] 
[XCUITest] Screen capture process did not start within 5000ms. Continuing anyway



Anyone knows how to fix it ?
Thanks !


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av_interleaved_write_frame() : Cannot allocate memory, Error writing trailer of udp
30 août 2022, par Technical_Union7716I'm transcoding from udp input to mpegts udp output. After several hours ffmpeg used all ram memory. I don't know where the problem is.


Command :


ffmpeg -hwaccel vaapi -hwaccel_output_format vaapi -i "udp://239.100.1.5:1234?fifo_size=1000000&overrun_nonfatal=1" -map i:0x100 -map i:0x101 -vf 'scale_vaapi=w=720:h=576,hwdownload,format=nv12,fps=25' -c:v mpeg2video -b:v 5000k -minrate 5000k -maxrate 5000k -muxrate 7000k -pcr_period 40 -flags:v +ildct+ilme -top 0 -aspect 16:9 -c:a mp2 -b:a 192k -c:s copy -mpegts_service_id 1 -metadata service_name="Transcoded" -metadata service_provider="HD to SD" -f mpegts "udp://239.120.1.2:7006?pkt_size=1316&bitrate=12000000"


Logs :


Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, bt709, bottom first), 720x576 [SAR 64:45 DAR 16:9], q=2-31, 5000 kb/s, 25 fps, 90k tbn2022-08-23 13:27:04,291


Metadata :


encoder : Lavc59.39.100 mpeg2video


Side data :


cpb: bitrate max/min/avg: 5000000/5000000/5000000 buffer size: 1835008 vbv_delay: N/A
Stream #0:1(und): Audio: mp2, 44100 Hz, stereo, s16, 192 kb/s


Metadata :


encoder : Lavc59.39.100 mp2
2022-08-24 04:08:47,884 av_interleaved_write_frame(): Cannot allocate memory41:02.67 bitrate=7000.0kbits/s speed=0.999x
2022-08-24 04:08:47,893 Last message repeated 1 times
2022-08-24 04:08:47,897 Error writing trailer of udp://239.120.1.2:7006?pkt_size=1316&bitrate=12000000: Cannot allocate memory
2022-08-24 04:08:47,898 frame=1321595 fps= 25 q=2.0 Lsize=45171938kB time=14:41:04.20 bitrate=7000.0kbits/s speed=0.999x
video:32265447kB audio:1239612kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 34.821243%
2022-08-24 04:08:51,469 Error closing file udp://239.120.1.2:7006?pkt_size=1316&bitrate=12000000: Cannot allocate memory
2022-08-24 04:08:51,750 Conversion failed!


Any ideas ?


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