ffmpeg - 在为歌曲编写缩略图时，我的 FFMPEG 引发了我意想不到的错误

Question

我正在使用 Node 来执行我的 ffmpeg。我使用这个包装器:

https://www.npmjs.com/package/ffmpeg

当我使用 Youtube 提供的较小版本的缩略图时，一切都很好，但是当我尝试高清版本时，它突然开始给我一个错误。我试过 -pix_fmt yuv422p 和许多其他像素格式，但没有任何帮助。尽管 100 多首歌曲中的一首确实成功标记。

这是我的代码:

downloadTags(tags.thumbnail, `./thumbnails/${tags.title}.jpg`).then(thumbnail =>
                    {
                        video.addCommand('-i', `"${thumbnail}"`);
                        video.addCommand('-map', '0');
                        video.addCommand('-map', '1');
                        video.addCommand('-c', 'copy');
                        video.addCommand('-c:v:1', 'png');
                        video.addCommand('-disposition:v:0', 'attached_pic');
                        if(tags.title)
                            video.addCommand('-metadata', `title="${tags.title}"`);
                        if(tags.artist)
                            video.addCommand('-metadata', `artist="${tags.artist}"`);
                        if(tags.id)
                            video.addCommand('-metadata', `comment="https://www.youtube.com/watch?v=${tags.id}"`);
                        video.addCommand('-pix_fmt', `yuv422p`);


                        var output = 'downloaded'
                        if (outFolder)
                        {
                            output = outFolder;
                            if(!fs.existsSync(output)) fs.mkdirSync(output);
                        }

                        video.save(`"./${output}/${tags.title}.${tags.format}"`, function (error, file) 
                        {
                            if (error)
                            {
                                resolve(error);
                                return
                            }
                            try
                            {
                                fs.unlinkSync(song);
                            }
                            catch(err)
                            {
                                console.log(err.code);
                            }
                            resolve();

                        });
                    });

                }

这是我的错误:

乙

RROR: Error: Command failed: ffmpeg -i "songs/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].m4a" -y  -i "./thumbnails/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].jpg" -map 0 -map 1 -c copy -c:v:1 png -disposition:v:0 attached_pic -metadata title="&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep]" -metadata artist="AReallyLongAndAwesomeNameThatIsBetterThanYoursInEveryPossibleWay" -metadata comment="https://www.youtube.com/watch?v=HprdvIIpR-I" "./written/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].m4a"
ffmpeg version N-93214-g7e4d3dbe18 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 8.2.1 (GCC) 20190212
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  libavutil      56. 26.100 / 56. 26.100
  libavcodec     58. 47.102 / 58. 47.102
  libavformat    58. 26.101 / 58. 26.101
  libavdevice    58.  6.101 / 58.  6.101
  libavfilter     7. 48.100 /  7. 48.100
  libswscale      5.  4.100 /  5.  4.100
  libswresample   3.  4.100 /  3.  4.100
  libpostproc    55.  4.100 / 55.  4.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002213366bb00] stream 0, timescale not set
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'songs/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].m4a':
  Metadata:
    major_brand     : M4A
    minor_version   : 512
    compatible_brands: isomiso2
    title           : &I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep]
    artist          : Cider Party
    encoder         : Lavf58.18.104
    comment         : https://www.youtube.com/watch?v=HprdvIIpR-I
  Duration: 00:05:24.80, start: 0.000000, bitrate: 127 kb/s
    Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
    Stream #0:1: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 120x90 [SAR 1:1 DAR 4:3], 90k tbr, 90k tbn, 90k tbc
Input #1, image2, from './thumbnails/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].jpg':
  Duration: 00:00:00.04, start: 0.000000, bitrate: 1575 kb/s
    Stream #1:0: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 480x360 [SAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
  Stream #1:0 -> #0:2 (mjpeg (native) -> png (native))
Press [q] to stop, [?] for help
[swscaler @ 00000221353d4fc0] deprecated pixel format used, make sure you did set range correctly
[ipod @ 00000221336703c0] Could not find tag for codec png in stream #2, codec not currently supported in container
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:2 --
Conversion failed!

请记住，我检索到的所有缩略图都是 .jpg

有什么建议么？这个时候真的很绝望……

Answer 1

您的音频输入已经嵌入了封面图像，因此当您设置 -map 0 -map 1 ，来自音频的封面图像被映射为第一个视频流，新的外部图像被映射为第二个视频流。然后你设置-disposition:v:0 attached_pic它应用于已经嵌入的图像，而不是新的图像。在 .m4a , MJPEG 或 PNG 只允许用于封面图像，而不是常规视频流，因此命令失败。

如果您只想将新图像作为缩略图，
ffmpeg -i "songs/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].m4a" -y -i "./thumbnails/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].jpg" -map 0 -map -0:v -map 1 -c copy -c:v png -disposition:v attached_pic -metadata title="&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep]" -metadata artist="AReallyLongAndAwesomeNameThatIsBetterThanYoursInEveryPossibleWay" -metadata comment="https://www.youtube.com/watch?v=HprdvIIpR-I" "./written/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].m4a"
如果两者都需要，
ffmpeg -i "songs/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].m4a" -y -i "./thumbnails/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].jpg" -map 0 -map 1 -c copy -c:v png -disposition:v attached_pic -metadata title="&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep]" -metadata artist="AReallyLongAndAwesomeNameThatIsBetterThanYoursInEveryPossibleWay" -metadata comment="https://www.youtube.com/watch?v=HprdvIIpR-I" "./written/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].m4a"