我試着去處理一個文件並運行以下命令FFmpeg的「無法分析選項值‘(空)’作爲樣本格式」
ffmpeg -i input.webm output.webm
我與ffmpeg的圖書館做它從videoconverter.js。我試圖瞭解什麼是錯的,或者我如何解決它。
我最終得到這樣的:
Worker has received command
Received command: -i input.webm output.webm. Processing with 268435456 bits.
ffmpeg version 2.2.1 Copyright (c) 2000-2014 the FFmpeg developers
built on Jun 9 2014 20:24:32 with emcc (Emscripten GCC-like replacement) 1.12.0 (commit 6960d2296299e96d43e694806f5d35799ef8d39c)
configuration: --cc=emcc --prefix=/Users/bgrinstead/Sites/videoconverter.js/build/ffmpeg/../dist --extra-cflags='-I/Users/bgrinstead/Sites/videoconverter.js/build/ffmpeg/../dist/include -v' --enable-cross-compile --target-os=none --arch=x86_32 --cpu=generic --disable-ffplay --disable-ffprobe --disable-ffserver --disable-asm --disable-doc --disable-devices --disable-pthreads --disable-w32threads --disable-network --disable-hwaccels --disable-parsers --disable-bsfs --disable-debug --disable-protocols --disable-indevs --disable-outdevs --enable-protocol=file --enable-libvpx --enable-gpl --extra-libs='/Users/bgrinstead/Sites/videoconverter.js/build/ffmpeg/../dist/lib/libx264.a /Users/bgrinstead/Sites/videoconverter.js/build/ffmpeg/../dist/lib/libvpx.a'
libavutil 52. 66.100/52. 66.100
libavcodec 55. 52.102/55. 52.102
libavformat 55. 33.100/55. 33.100
libavdevice 55. 10.100/55. 10.100
libavfilter 4. 2.100/4. 2.100
libswscale 2. 5.102/2. 5.102
libswresample 0. 18.100/0. 18.100
libpostproc 52. 3.100/52. 3.100
[vp8 @ 0xed8c00] Warning: not compiled with thread support, using thread emulation
Guessed Channel Layout for Input Stream #0.0 : mono
Input #0, matroska,webm, from 'input.webm':
Metadata:
encoder : Chrome
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0(eng): Audio: opus, 48000 Hz, mono (default)
Stream #0:1(eng): Video: vp8, yuv420p, 640x480, SAR 1:1 DAR 4:3, 30 fps, 30 tbr, 1k tbn, 1k tbc (default)
[abuffer @ 0xedd670] Unable to parse option value "(null)" as sample format
Last message repeated 1 times
Last message repeated 1 times
[abuffer @ 0xedd670] Error setting option sample_fmt to value (null).
[graph 1 input from stream 0:0 @ 0xedd600] Error applying options to the filter.
Error opening filters!
Finished processing (took 673ms)
最終的結果是,由於停止「無法分析選項值‘(空)’作爲樣本格式」。我將如何解決這個問題?
看起來不像一個編程特定的問題,所以它在這裏是不重要的。我建議[su]提供'ffmpeg' cli工具使用問題。 – LordNeckbeard
@LordNeckbeard ffmpeg的普通版本沒有問題。 JavaScript emscripten版本。 – Akshat