conversion pour le format de fichier WebM en utilisant FFMPEG

Question

J'utilise commande followng pour convertir la vidéo au format WebM

ffmpeg -i video/ds2.mp4 -acodec libvorbis -ac 2 -ab 96k -ar 44100 -b:a 345k -s 640x360 video/ds2.webm 

Je reçois des erreurs suivantes:

1) format échantillon incompatible 'S16' pour libvorbis » codec '

2) strptime() indisponible sur ce système, ne peut pas convertir la chaîne de données

Avez-vous une idée de pourquoi je ne peux pas convertir, la conversion au format FLV testé et « S de travail très bien

Sortie de la console

C:\inetpub\wwwroot>ffmpeg -i video/testavi.avi video/ds2.webm 
ffmpeg version N-35709-g7d531e8, Copyright (c) 2000-2011 the FFmpeg developers 
    built on Dec 12 2011 13:56:52 with gcc 4.6.2 
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-ru 
ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libope 
ncore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --en 
able-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-libschroedinger - 
-enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwben 
c --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable- 
libxvid --enable-zlib 
    libavutil 51. 32. 0/51. 32. 0 
    libavcodec 53. 43. 0/53. 43. 0 
    libavformat 53. 24. 0/53. 24. 0 
    libavdevice 53. 4. 0/53. 4. 0 
    libavfilter 2. 53. 0/2. 53. 0 
    libswscale 2. 1. 0/2. 1. 0 
    libpostproc 51. 2. 0/51. 2. 0 
Input #0, avi, from 'video/testavi.avi': 
    Metadata: 
    encoder   : Lavf51.12.1 
    Duration: 00:00:13.03, start: 0.000000, bitrate: 36427 kb/s 
    Stream #0:0: Video: msmpeg4 (MP43/0x3334504D), yuv420p, 1920x1080, 30 tbr, 
30 tbn, 30 tbc 
    Stream #0:1: Audio: mp3 (U[0][0][0]/0x0055), 44100 Hz, stereo, s16, 192 kb 
/s 
File 'video/ds2.webm' already exists. Overwrite ? [y/N] y 
w:1920 h:1080 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param: 
[libvpx @ 0000000001CA9BB0] v0.9.7-p1 
Output #0, webm, to 'video/ds2.webm': 
    Metadata: 
    encoder   : Lavf53.24.0 
    Stream #0:0: Video: vp8, yuv420p, 1920x1080, q=-1--1, 200 kb/s, 1k tbn, 30 t 
bc 
    Stream #0:1: Audio: vorbis, 44100 Hz, stereo, s16, 128 kb/s 
Stream mapping: 
    Stream #0:0 -> #0:0 (msmpeg4 -> libvpx) 
    Stream #0:1 -> #0:1 (mp3 -> libvorbis) 
Press [q] to stop, [?] for help 

---

Problem signature: 
    Problem Event Name: APPCRASH 
    Application Name: ffmpeg.exe 
    Application Version: 0.0.0.0 
    Application Timestamp: 4ee64f02 
    Fault Module Name: ffmpeg.exe 
    Fault Module Version: 0.0.0.0 
    Fault Module Timestamp: 4ee64f02 
    Exception Code: c0000005 
    Exception Offset: 000000000091e090 
    OS Version: 6.1.7601.2.1.0.272.7 
    Locale ID: 1033 
    Additional Information 1: ab8f 
    Additional Information 2: ab8f35a907f8f11a8d2e787a8e40efbd 
    Additional Information 3: f4d5 
    Additional Information 4: f4d524f8bf76a4b71cc6a7afa6412ca9 

Read our privacy statement online: 
    http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409 

If the online privacy statement is not available, please read our privacy statement offline: 
    C:\Windows\system32\en-US\erofflps.txt 

Et Console Uncut Sortie

C:\inetpub\wwwroot>ffmpeg.exe -i "video/testavi.avi" -acodec libvorbis -b:a 96k 
-ac 2 -vcodec libvpx -b:v 400k -f webm -s 384x216 "video/testavi.webm" 
ffmpeg version N-35709-g7d531e8, Copyright (c) 2000-2011 the FFmpeg developers 
    built on Dec 12 2011 13:56:52 with gcc 4.6.2 
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-ru 
ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libope 
ncore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --en 
able-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-libschroedinger - 
-enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwben 
c --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable- 
libxvid --enable-zlib 
    libavutil 51. 32. 0/51. 32. 0 
    libavcodec 53. 43. 0/53. 43. 0 
    libavformat 53. 24. 0/53. 24. 0 
    libavdevice 53. 4. 0/53. 4. 0 
    libavfilter 2. 53. 0/2. 53. 0 
    libswscale 2. 1. 0/2. 1. 0 
    libpostproc 51. 2. 0/51. 2. 0 
Input #0, avi, from 'video/testavi.avi': 
    Metadata: 
    encoder   : Lavf51.12.1 
    Duration: 00:00:13.03, start: 0.000000, bitrate: 36427 kb/s 
    Stream #0:0: Video: msmpeg4 (MP43/0x3334504D), yuv420p, 1920x1080, 30 tbr, 
30 tbn, 30 tbc 
    Stream #0:1: Audio: mp3 (U[0][0][0]/0x0055), 44100 Hz, stereo, s16, 192 kb 
/s 
[buffer @ 0000000001D7FF60] w:1920 h:1080 pixfmt:yuv420p tb:1/1000000 sar:0/1 sw 
s_param: 
[scale @ 0000000001D7E9E0] w:1920 h:1080 fmt:yuv420p -> w:384 h:216 fmt:yuv420p 
flags:0x4 
[libvpx @ 0000000001BF7C10] v0.9.7-p1 
Output #0, webm, to 'video/testavi.webm': 
    Metadata: 
    encoder   : Lavf53.24.0 
    Stream #0:0: Video: vp8, yuv420p, 384x216, q=-1--1, 400 kb/s, 1k tbn, 30 tbc 

    Stream #0:1: Audio: vorbis, 44100 Hz, 2 channels, s16, 96 kb/s 
Stream mapping: 
    Stream #0:0 -> #0:0 (msmpeg4 -> libvpx) 
    Stream #0:1 -> #0:1 (mp3 -> libvorbis) 
Press [q] to stop, [?] for help 

Answer 1

La commande que vous avez affichée travaillé. Les deux messages que vous avez envoyés sont des avertissements et non des erreurs fatales.

D'ailleurs, j'utiliser cette commande pour créer des vidéos WebM:

ffmpeg.exe -i "blank.mp4" -acodec libvorbis -b:a 96k -ac 2 -vcodec libvpx -b:v 400k -f webm -s 384x216 "blank.webm"