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Médias (91)
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Valkaama DVD Cover Outside
4 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Image
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Valkaama DVD Label
4 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Image
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Valkaama DVD Cover Inside
4 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Image
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1,000,000
27 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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Demon Seed
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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The Four of Us are Dying
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
Autres articles (41)
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
-
Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...) -
Other interesting software
13 avril 2011, parWe don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
We don’t know them, we didn’t try them, but you can take a peek.
Videopress
Website : http://videopress.com/
License : GNU/GPL v2
Source code : (...)
Sur d’autres sites (7613)
-
FFMPEG result video freezes in the middle of playback
10 mai 2013, par RevoluziferI'm trying stitch four source videos together into one grid. For testing purposes I'm working with a single source flv using this command :
ffmpeg -i woohoo.flv -i woohoo.flv -i woohoo.flv -i woohoo.flv \
-filter_complex "[0:0]pad=iw:ih[a];[1:0]scale=w=iw/2:h=ih/2[b];
[2:0]scale=w=iw/2:h=ih/2[c];[3:0]scale=w=iw/2:h=ih/2[d];
[0:0]scale=w=iw/2:h=ih/2[e];[a][b]overlay=w[x];[x][c]overlay=0:h[y];
[y][d]overlay=w:h[z];[z][e]overlay=0:0" -qscale 1 stitched.aviThe stitching itself is working great, but somehow the resulting video does not show as expected.
After running for a few frames, it gets stuck at a single frame for most of the video, skipping the frames which should be there.While encoding ffmpeg throws a freaking lot of messages like :
[Parsed_overlay_8 @ 000000000459e080] Buffer queue overflow, dropping.Any hints on how to solve my problem ?
My source flv is h.264 encoded, coming from Red5 media server.Edit : Output is :
root@s15757871:/opt/red5/webapps/woohoo/streams# ffmpeg -i out_3.mp4 -i 3.mp4 -filter_complex "[0:0]pad=iw:ih[a];[1:0]scale=w=iw/2:h=ih/2[b];[a][b]overlay=w:h" -vcodec libx264 -r 30 -acodec copy out_final.mp4
ffmpeg version N-52943-g500220a Copyright (c) 2000-2013 the FFmpeg developers
built on May 10 2013 09:46:03 with gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1)
configuration: --enable-gpl --enable-libx264 --enable-libmp3lame --enable-nonfree --enable-libaacplus
libavutil 52. 30.100 / 52. 30.100
libavcodec 55. 7.100 / 55. 7.100
libavformat 55. 4.101 / 55. 4.101
libavdevice 55. 0.100 / 55. 0.100
libavfilter 3. 63.101 / 3. 63.101
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'out_3.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.4.101
Duration: 00:00:26.53, start: 0.000000, bitrate: 513 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 447 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, mono, s16p, 62 kb/s
Metadata:
handler_name : SoundHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '3.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.4.101
Duration: 00:00:26.60, start: 0.000000, bitrate: 639 kb/s
Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 574 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
Metadata:
handler_name : VideoHandler
Stream #1:1(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, mono, s16p, 62 kb/s
Metadata:
handler_name : SoundHandler
File 'out_final.mp4' already exists. Overwrite ? [y/N] y
[libx264 @ 0x19baee0] using SAR=1/1
[libx264 @ 0x19baee0] using cpu capabilities: MMX2 SSE2Fast SSEMisalign LZCNT
[libx264 @ 0x19baee0] profile High, level 3.0
[libx264 @ 0x19baee0] 264 - core 132 r2310 76a5c3a - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'out_final.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.4.101
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x360 [SAR 1:1 DAR 16:9], q=-1--1, 15360 tbn, 30 tbc
Stream #0:1(und): Audio: mp3 (i[0][0][0] / 0x0069), 44100 Hz, mono, 62 kb/s
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 (h264) -> pad
Stream #1:0 (h264) -> scale
overlay -> Stream #0:0 (libx264)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
Buffer queue overflow, dropping. 583kB time=00:00:08.00 bitrate= 597.3kbits/s
[Parsed_overlay_2 @ 0x19be420] Buffer queue overflow, dropping.
Last message repeated 202 times
frame= 795 fps= 96 q=-2.0 Lsize= 1700kB time=00:00:27.04 bitrate= 514.9kbits/s dup=203 drop=0
video:1487kB audio:196kB subtitle:0 global headers:0kB muxing overhead 1.025454%
[libx264 @ 0x19baee0] frame I:4 Avg QP:19.83 size: 34019
[libx264 @ 0x19baee0] frame P:322 Avg QP:22.85 size: 3858
[libx264 @ 0x19baee0] frame B:469 Avg QP:24.57 size: 305
[libx264 @ 0x19baee0] consecutive B-frames: 13.8% 15.8% 20.0% 50.3%
[libx264 @ 0x19baee0] mb I I16..4: 10.5% 47.8% 41.7%
[libx264 @ 0x19baee0] mb P I16..4: 1.4% 3.0% 0.8% P16..4: 27.1% 14.4% 9.2% 0.0% 0.0% skip:44.1%
[libx264 @ 0x19baee0] mb B I16..4: 0.0% 0.1% 0.0% B16..8: 15.3% 1.5% 0.2% direct: 0.3% skip:82.6% L0:39.7% L1:53.8% BI: 6.5%
[libx264 @ 0x19baee0] 8x8 transform intra:56.6% inter:64.9%
[libx264 @ 0x19baee0] coded y,uvDC,uvAC intra: 58.4% 72.9% 39.0% inter: 8.3% 11.9% 1.0%
[libx264 @ 0x19baee0] i16 v,h,dc,p: 63% 18% 10% 10%
[libx264 @ 0x19baee0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 17% 20% 4% 7% 9% 6% 6% 8%
[libx264 @ 0x19baee0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 21% 13% 5% 7% 8% 6% 6% 7%
[libx264 @ 0x19baee0] i8c dc,h,v,p: 52% 18% 22% 9%
[libx264 @ 0x19baee0] Weighted P-Frames: Y:7.5% UV:4.0%
[libx264 @ 0x19baee0] ref P L0: 70.8% 16.9% 9.3% 2.8% 0.2%
[libx264 @ 0x19baee0] ref B L0: 90.6% 8.1% 1.3%
[libx264 @ 0x19baee0] ref B L1: 96.4% 3.6%
[libx264 @ 0x19baee0] kb/s:459.39The source mp4 files used here have successfully been converted from flv by ffmpeg before.
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How can I record, encrypt (in memory), and mux audio and video on android without the files getting out of sync ?
9 février 2021, par RobertWe’re attempting to save video and audio from an Android device into an encrypted file. Our current implementation pipes the outputs from microphone and camera through the MediaEncoder class. As the data is output from MediaEncoder, we are encrypting and writing the contents of the byte buffer to disk. This approach works, however, when attempting to stitch the files back together with FFMPEG, we notice that the two streams seem to get out of sync somewhere mid stream. It appears that a lot of important metadata is lost with this method, specifically presentation timestamps and frame rate data as ffmpeg has to do some guess work to mux the files.


Are there techniques for keeping these streams in sync without using MediaMuxer ? The video is encoded with H.264 and the audio with AAC.


Other Approaches :
We attempted to use the MediaMuxer to mux the output data to a file, but our use case requires that we encrypt the bytes of data before they are saved to disk which eliminates the possibility of using the default constructor.


Additionally, we have attempted to use the newly added (API 26) constructor that takes a FileDescriptor instead and have that pointed to a ParcelFileDescriptor that wrapped an Encrypted Document (https://android.googlesource.com/platform/development/+/master/samples/Vault/src/com/example/android/vault/EncryptedDocument.java). However, this approach led to crashes at the native layer and we believe it may have to do with this comment from the source code (https://android.googlesource.com/platform/frameworks/base.git/+/master/media/java/android/media/MediaMuxer.java#353) about the native writer trying to memory map the output file.


import android.graphics.YuvImage
import android.media.MediaCodec
import android.media.MediaCodecInfo
import android.media.MediaFormat
import android.media.MediaMuxer
import com.callyo.video_10_21.Utils.YuvImageUtils.convertNV21toYUV420Planar
import java.io.FileDescriptor
import java.util.*
import java.util.concurrent.atomic.AtomicReference
import kotlin.properties.Delegates

class VideoEncoderProcessor(
 private val fileDescriptor: FileDescriptor,
 private val width: Int,
 private val height: Int,
 private val frameRate: Int
): MediaCodec.Callback() {
 private lateinit var videoFormat: MediaFormat
 private var trackIndex by Delegates.notNull<int>()
 private var mediaMuxer: MediaMuxer
 private val mediaCodec = createEncoder()
 private val pendingVideoEncoderInputBufferIndices = AtomicReference>(LinkedList())

 companion object {
 private const val VIDEO_FORMAT = "video/avc"
 }

 init {
 mediaMuxer = MediaMuxer(fileDescriptor, MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4)
 mediaCodec.setCallback(this)
 mediaCodec.start()
 }

 private fun createEncoder(): MediaCodec {
 videoFormat = MediaFormat.createVideoFormat(VIDEO_FORMAT, width, height).apply {
 setInteger(MediaFormat.KEY_FRAME_RATE, frameRate)
 setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatYUV420Flexible)
 setInteger(MediaFormat.KEY_BIT_RATE, width * height * 5)
 setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 1)
 }

 return MediaCodec.createEncoderByType(VIDEO_FORMAT).apply {
 configure(videoFormat, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE)
 }
 }

 override fun onInputBufferAvailable(codec: MediaCodec, index: Int) {
 // logic for handling stream end omitted for clarity

 /* Video frames come in asynchronously from input buffer availability
 * so we need to keep track of available buffers in queue */
 pendingVideoEncoderInputBufferIndices.get().add(index)
 }

 override fun onError(codec: MediaCodec, e: MediaCodec.CodecException) {}

 override fun onOutputFormatChanged(codec: MediaCodec, format: MediaFormat) {
 trackIndex = mediaMuxer.addTrack(format)
 mediaMuxer.start()
 }

 override fun onOutputBufferAvailable(codec: MediaCodec, index: Int, bufferInfo: MediaCodec.BufferInfo) {
 val buffer = mediaCodec.getOutputBuffer(index)
 buffer?.apply {
 if (bufferInfo.size != 0) {
 limit(bufferInfo.offset + bufferInfo.size)
 rewind()
 mediaMuxer.writeSampleData(trackIndex, this, bufferInfo)
 }
 }

 mediaCodec.releaseOutputBuffer(index, false)

 if (bufferInfo.flags == MediaCodec.BUFFER_FLAG_END_OF_STREAM) {
 mediaCodec.stop()
 mediaCodec.release()
 mediaMuxer.stop()
 mediaMuxer.release()
 }
 }

 // Public method that receives raw unencoded video data
 fun encode(yuvImage: YuvImage) {
 // logic for handling stream end omitted for clarity

 pendingVideoEncoderInputBufferIndices.get().poll()?.let { index ->
 val buffer = mediaCodec.getInputBuffer(index)
 buffer?.clear()
 // converting frame to correct color format
 val input =
 yuvImage.convertNV21toYUV420Planar(ByteArray(yuvImage.yuvData.size), yuvImage.width, yuvImage.height)
 buffer?.put(input)
 buffer?.let {
 mediaCodec.queueInputBuffer(index, 0, input.size, System.nanoTime() / 1000, 0)
 }
 }
 }
}


</int>


Additional Info :
I’m using MediaCodec.Callback() (https://developer.android.com/reference/kotlin/android/media/MediaCodec.Callback?hl=en) to handle the encoding asynchronously.


-
what is the correct command using gstreamer to convert mp4 to 264 file ?
25 mars 2020, par hilowMy english is pool, i am sorry !
I use ffmpeg and gstreamer convert mp4 file to 264 format, but the output file is different.
The question is :-
1.Why they are different file ?
-
2.What is the
levelmean ingst-discoverer-1.0?Use ffmpeg it is
Codec: video/x-h264, ...... level=(string)1.2.Use gstreamer it is
Codec: video/x-h264, ...... level=(string)3. -
3.How to use gstreamer to convert the correct 264 file ?
The original video file is come from https://github.com/notedit/media-server-go-demo/blob/master/video-mixer/public/big_buck_bunny.mp4 .
command :
gst-launch-1.0 filesrc location=big_buck_bunny.mp4 ! \
qtdemux name=demux \
demux.video_0 ! queue ! \
decodebin ! \
videoconvert ! \
videoscale ! \
videorate ! \
video/x-raw,width=320,height=240,framerate=15/1,pixel-aspect-ratio=1/1,level=1.2 ! \
x264enc bframes=0 byte-stream=true bitrate=9000 ! \
filesink location=videogst.264
ffmpeg -i big_buck_bunny.mp4 -f h264 -vcodec libx264 -s 320x240 -bf 0 -r 15 videoffmpeg.264output file :
-rw-r--r-- 1 xxx staff 1.9M 3 25 13:39 videoffmpeg.264
-rw-r--r-- 1 xxx staff 17M 3 25 13:40 videogst.264video codec :
xxx@xxxs-MacBook-Pro resource % gst-discoverer-1.0 videoffmpeg.264 -v
Analyzing file:///Users/xxx/tool/resource/videoffmpeg.264
Done discovering file:///Users/xxx/tool/resource/videoffmpeg.264
Topology:
video: video/x-h264, width=(int)320, height=(int)240, framerate=(fraction)15/1, chroma-format=(string)4:2:0, bit-depth-luma=(uint)8, bit-depth-chroma=(uint)8, parsed=(boolean)true, stream-format=(string)avc, alignment=(string)au, profile=(string)high, level=(string)1.2, codec_data=(buffer)0164000cffe100176764000cacb20283f420000003002000000303c1e2854901000668ebc3cb22c0
Tags:
视频编码: H.264 (High Profile)
Codec:
video/x-h264, width=(int)320, height=(int)240, framerate=(fraction)15/1, chroma-format=(string)4:2:0, bit-depth-luma=(uint)8, bit-depth-chroma=(uint)8, parsed=(boolean)true, stream-format=(string)avc, alignment=(string)au, profile=(string)high, level=(string)1.2, codec_data=(buffer)0164000cffe100176764000cacb20283f420000003002000000303c1e2854901000668ebc3cb22c0
Additional info:
None
Stream ID: 349989c8845fcc23360fb0ab02ea7510051b926669bf8f3862879823fbab6daf
Width: 320
Height: 240
Depth: 24
Frame rate: 15/1
Pixel aspect ratio: 1/1
Interlaced: false
Bitrate: 0
Max bitrate: 0
Properties:
Duration: 0:01:32.995000000
Seekable: yes
Live: no
Tags:
视频编码: H.264 (High Profile)
xxx@xxxs-MacBook-Pro resource % gst-discoverer-1.0 videogst.264 -v
Analyzing file:///Users/xxx/tool/resource/videogst.264
Done discovering file:///Users/xxx/tool/resource/videogst.264
Topology:
video: video/x-h264, pixel-aspect-ratio=(fraction)1/1, width=(int)320, height=(int)240, framerate=(fraction)15/1, chroma-format=(string)4:2:0, bit-depth-luma=(uint)8, bit-depth-chroma=(uint)8, parsed=(boolean)true, stream-format=(string)avc, alignment=(string)au, profile=(string)high, level=(string)3, codec_data=(buffer)0164001effe1001d6764001eacb20283f602d4180416940000030004000003007a3c58b92001000568ebccb22c
Tags:
视频编码: H.264 (High Profile)
Codec:
video/x-h264, pixel-aspect-ratio=(fraction)1/1, width=(int)320, height=(int)240, framerate=(fraction)15/1, chroma-format=(string)4:2:0, bit-depth-luma=(uint)8, bit-depth-chroma=(uint)8, parsed=(boolean)true, stream-format=(string)avc, alignment=(string)au, profile=(string)high, level=(string)3, codec_data=(buffer)0164001effe1001d6764001eacb20283f602d4180416940000030004000003007a3c58b92001000568ebccb22c
Additional info:
None
Stream ID: fb99f4104b347e5682d52c0bd65bcee91b765e42f89ce2e3553be5d6d743a666
Width: 320
Height: 240
Depth: 24
Frame rate: 15/1
Pixel aspect ratio: 1/1
Interlaced: false
Bitrate: 0
Max bitrate: 0
Properties:
Duration: 0:01:45.505000000
Seekable: yes
Live: no
Tags:
视频编码: H.264 (High Profile) -
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