ffmpegが動画を認識できず、書き出しが失敗する

[ryukora]

will it support hardware acceleration? the software is using my CPU to its full capacity, and then it crashes.

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ハードウェアアクセラレーションに対応していますか？ソフトウェアが CPU をフル稼働させてしまい、その後クラッシュしてしまいます。

[xpadev-net]

electron(UIとコメントのレンダリング)はhardwareアクセラレーションが有効になっていますが、動画のエンコードにはエンコーダーにlibx264を指定したffmpegを用いているため、CPUを使用しています。

HWアクセラレーションが利用できるエンコーダー(h264_nvenc など)を指定するとCPUへの負荷を軽減できると思います。

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Hardware acceleration is enabled for electron (rendering of UI and comments), but ffmpeg with libx264 specified as the encoder is used to encode the video, so it uses CPU.

I think that specifying an encoder that can use HW acceleration (e.g. h264_nvenc) will reduce the load on the CPU.

[ryukora]

electron(UIとコメントのレンダリング)はhardwareアクセラレーションが有効になっていますが、動画のエンコードにはエンコーダーにlibx264を指定したffmpegを用いているため、CPUを使用しています。

HWアクセラレーションが利用できるエンコーダー(h264_nvenc など)を指定するとCPUへの負荷を軽減できると思います。

Hardware acceleration is enabled for electron (rendering of UI and comments), but ffmpeg with libx264 specified as the encoder is used to encode the video, so it uses CPU.

I think that specifying an encoder that can use HW acceleration (e.g. h264_nvenc) will reduce the load on the CPU.

Here are the results.
Suddenly it stops after some high CPU usage and freezes the process.
I apologize if I did something wrong or misinformation.

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結果は以下の通りです。
CPU 使用率が急上昇した後、突然停止し、プロセスがフリーズします。
何か間違った操作をした場合や、誤った情報をご提供しました場合は、お詫び申し上げます。

書き出し中にエラーが発生しました
エラー内容:
{
	"stack": "Error: Converting failed\n    at ChildProcess.<anonymous> (C:\\Users\\Ryukura\\Downloads\\niconicomments-convert-0.0.31-win\\resources\\app.asar\\build\\electron\\ffmpeg-stream\\stream.js:293:24)\n    at ChildProcess.emit (node:events:518:28)\n    at ChildProcess._handle.onexit (node:internal/child_process:293:12)",
	"message": "Converting failed"
}

[xpadev-net]

見たところffmpegがクラッシュしているようなので niconicomments-convert-0.0.31-win\resources\logs 以下にあるログファイルの内容をいただけるとありがたいです

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From the looks of it, ffmpeg seems to be crashing, so I would appreciate the contents of the log file under niconicomments-convert-0.0.31-win\resources\logs

[ryukora]

見たところffmpegがクラッシュしているようなので niconicomments-convert-0.0.31-win\resources\logs 以下にあるログファイルの内容をいただけるとありがたいです

From the looks of it, ffmpeg seems to be crashing, so I would appreciate the contents of the log file under niconicomments-convert-0.0.31-win\resources\logs

20250628.log

[2025-06-28 10:44:17.203] [info]  [ffmpeg-stream] spawn: C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\resources\bin\ffmpeg.exe -y -v verbose -i C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\sm3945173.mp4 -f image2pipe -r 60 -i pipe:3 -sws_flags spline+accurate_rnd+full_chroma_int -b:v 0 -crf 30 -filter_complex [0:v]fps=fps=60,pad=width=max(iw\, ih*(16/9)):height=ow/(16/9):x=(ow-iw)/2:y=(oh-ih)/2,scale=w=1920:h=1080[video];[1:v]format=yuva444p,colorspace=bt709:iall=bt601-6-525:fast=1[baseImage];[1:v]format=rgba,alphaextract[alpha];[baseImage][alpha]alphamerge[image];[video][image]overlay[output] -color_range 1 -colorspace 1 -color_primaries 1 -color_trc 1 -map:v [output] -map:a 0:a -r 60 C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\sm3945173_niconicomments.mkv
[2025-06-28 10:44:17.206] [info]  [ffmpeg-stream] spawn stdio: ignore ignore pipe pipe
[2025-06-28 10:44:17.923] [info]  [ffmpeg-stream] [ffmpeg] [Parsed_scale_2 @ 000001bc6f6740c0] w:1920 h:1080 flags:'' interl:0
[2025-06-28 10:44:17.924] [info]  [ffmpeg-stream] [ffmpeg] [Parsed_fps_0 @ 000001bc6f6742c0] 0 frames in, 0 frames out; 0 frames dropped, 0 frames duplicated.
[2025-06-28 10:44:17.925] [info]  [ffmpeg-stream] [ffmpeg] [in#0 @ 000001bc6f6bc580] Error opening input: No such file or directory
[2025-06-28 10:44:17.926] [info]  [ffmpeg-stream] [ffmpeg] Error opening input file C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\sm3945173.mp4.
[2025-06-28 10:44:17.926] [info]  [ffmpeg-stream] [ffmpeg] Error opening input files: No such file or directory
[2025-06-28 10:44:18.145] [info]  [ffmpeg-stream] exit: code=4294967294 sig=unknown
[2025-06-28 10:44:18.146] [error] [ffmpeg-stream] Error: Converting failed
    at ChildProcess.<anonymous> (C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\resources\app.asar\build\electron\ffmpeg-stream\stream.js:293:24)
    at ChildProcess.emit (node:events:518:28)
    at ChildProcess._handle.onexit (node:internal/child_process:293:12)
[2025-06-28 10:44:18.147] [error] [queue] failed to convert Error: Converting failed
    at ChildProcess.<anonymous> (C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\resources\app.asar\build\electron\ffmpeg-stream\stream.js:293:24)
    at ChildProcess.emit (node:events:518:28)
    at ChildProcess._handle.onexit (node:internal/child_process:293:12)
[2025-06-28 16:19:46.909] [info]  [ffmpeg-stream] spawn: C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\resources\bin\ffmpeg.exe -y -v verbose -i C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\sm3945173.mp4 -f image2pipe -r 60 -i pipe:3 -sws_flags spline+accurate_rnd+full_chroma_int -b:v 0 -crf 30 -filter_complex [0:v]fps=fps=60,pad=width=max(iw\, ih*(16/9)):height=ow/(16/9):x=(ow-iw)/2:y=(oh-ih)/2,scale=w=1920:h=1080[video];[1:v]format=yuva444p,colorspace=bt709:iall=bt601-6-525:fast=1[baseImage];[1:v]format=rgba,alphaextract[alpha];[baseImage][alpha]alphamerge[image];[video][image]overlay[output] -color_range 1 -colorspace 1 -color_primaries 1 -color_trc 1 -map:v [output] -map:a 0:a -r 60 -c:v libx264 C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\sm3945173_niconicomments.mp4
[2025-06-28 16:19:46.912] [info]  [ffmpeg-stream] spawn stdio: ignore ignore pipe pipe
[2025-06-28 16:19:47.291] [info]  [ffmpeg-stream] [ffmpeg] [Parsed_scale_2 @ 00000155f1c6a6c0] w:1920 h:1080 flags:'' interl:0
[2025-06-28 16:19:47.292] [info]  [ffmpeg-stream] [ffmpeg] [Parsed_fps_0 @ 00000155f1c18580] 0 frames in, 0 frames out; 0 frames dropped, 0 frames duplicated.
[2025-06-28 16:19:47.293] [info]  [ffmpeg-stream] [ffmpeg] [in#0 @ 00000155f1c0aa00] Error opening input: No such file or directory
[2025-06-28 16:19:47.294] [info]  [ffmpeg-stream] [ffmpeg] Error opening input file C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\sm3945173.mp4.
[2025-06-28 16:19:47.295] [info]  [ffmpeg-stream] [ffmpeg] Error opening input files: No such file or directory
[2025-06-28 16:19:47.525] [info]  [ffmpeg-stream] exit: code=4294967294 sig=unknown
[2025-06-28 16:19:47.526] [error] [ffmpeg-stream] Error: Converting failed
    at ChildProcess.<anonymous> (C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\resources\app.asar\build\electron\ffmpeg-stream\stream.js:293:24)
    at ChildProcess.emit (node:events:518:28)
    at ChildProcess._handle.onexit (node:internal/child_process:293:12)
[2025-06-28 16:19:47.527] [error] [queue] failed to convert Error: Converting failed
    at ChildProcess.<anonymous> (C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\resources\app.asar\build\electron\ffmpeg-stream\stream.js:293:24)
    at ChildProcess.emit (node:events:518:28)
    at ChildProcess._handle.onexit (node:internal/child_process:293:12)
[2025-06-28 16:21:13.324] [info]  [ffmpeg-stream] spawn: C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\resources\bin\ffmpeg.exe -y -v verbose -i C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\sm3945173.mp4 -f image2pipe -r 60 -i pipe:3 -sws_flags spline+accurate_rnd+full_chroma_int -b:v 0 -crf 30 -filter_complex [0:v]fps=fps=60,pad=width=max(iw\, ih*(16/9)):height=ow/(16/9):x=(ow-iw)/2:y=(oh-ih)/2,scale=w=1920:h=1080[video];[1:v]format=yuva444p,colorspace=bt709:iall=bt601-6-525:fast=1[baseImage];[1:v]format=rgba,alphaextract[alpha];[baseImage][alpha]alphamerge[image];[video][image]overlay[output] -color_range 1 -colorspace 1 -color_primaries 1 -color_trc 1 -map:v [output] -map:a 0:a -r 60 -c:v libx264 C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\sm3945173_niconicomments.mp4
[2025-06-28 16:21:13.325] [info]  [ffmpeg-stream] spawn stdio: ignore ignore pipe pipe
[2025-06-28 16:21:14.119] [info]  [ffmpeg-stream] [ffmpeg] [Parsed_scale_2 @ 00000125e275f2c0] w:1920 h:1080 flags:'' interl:0
[2025-06-28 16:21:14.119] [info]  [ffmpeg-stream] [ffmpeg] [Parsed_fps_0 @ 00000125e2762240] 0 frames in, 0 frames out; 0 frames dropped, 0 frames duplicated.
[2025-06-28 16:21:14.120] [info]  [ffmpeg-stream] [ffmpeg] [in#0 @ 00000125e27663c0] Error opening input: No such file or directory
[2025-06-28 16:21:14.121] [info]  [ffmpeg-stream] [ffmpeg] Error opening input file C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\sm3945173.mp4.
[2025-06-28 16:21:14.122] [info]  [ffmpeg-stream] [ffmpeg] Error opening input files: No such file or directory
[2025-06-28 16:21:14.535] [info]  [ffmpeg-stream] exit: code=4294967294 sig=unknown
[2025-06-28 16:21:14.535] [error] [ffmpeg-stream] Error: Converting failed
    at ChildProcess.<anonymous> (C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\resources\app.asar\build\electron\ffmpeg-stream\stream.js:293:24)
    at ChildProcess.emit (node:events:518:28)
    at ChildProcess._handle.onexit (node:internal/child_process:293:12)
[2025-06-28 16:21:14.536] [error] [queue] failed to convert Error: Converting failed
    at ChildProcess.<anonymous> (C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\resources\app.asar\build\electron\ffmpeg-stream\stream.js:293:24)
    at ChildProcess.emit (node:events:518:28)
    at ChildProcess._handle.onexit (node:internal/child_process:293:12)
[2025-06-28 16:33:34.531] [info]  [ffmpeg-stream] spawn: C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\resources\bin\ffmpeg.exe -y -v verbose -i C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\sm3945173.mp4 -f image2pipe -r 30 -i pipe:3 -sws_flags spline+accurate_rnd+full_chroma_int -b:v 0 -crf 30 -filter_complex [0:v]fps=fps=30,pad=width=max(iw\, ih*(16/9)):height=ow/(16/9):x=(ow-iw)/2:y=(oh-ih)/2,scale=w=1920:h=1080[video];[1:v]format=yuva444p,colorspace=bt709:iall=bt601-6-525:fast=1[baseImage];[1:v]format=rgba,alphaextract[alpha];[baseImage][alpha]alphamerge[image];[video][image]overlay[output] -color_range 1 -colorspace 1 -color_primaries 1 -color_trc 1 -map:v [output] -map:a 0:a -r 30 -c:v libx264 C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\sm3945173_niconicomments.mp4
[2025-06-28 16:33:34.534] [info]  [ffmpeg-stream] spawn stdio: ignore ignore pipe pipe
[2025-06-28 16:33:35.310] [info]  [ffmpeg-stream] [ffmpeg] [Parsed_scale_2 @ 000002d94fe8ee40] w:1920 h:1080 flags:'' interl:0
[2025-06-28 16:33:35.310] [info]  [ffmpeg-stream] [ffmpeg] [Parsed_fps_0 @ 000002d94fe2f2c0] 0 frames in, 0 frames out; 0 frames dropped, 0 frames duplicated.
[2025-06-28 16:33:35.311] [info]  [ffmpeg-stream] [ffmpeg] [in#0 @ 000002d94fe2f2c0] Error opening input: No such file or directory
[2025-06-28 16:33:35.312] [info]  [ffmpeg-stream] [ffmpeg] Error opening input file C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\sm3945173.mp4.
[2025-06-28 16:33:35.312] [info]  [ffmpeg-stream] [ffmpeg] Error opening input files: No such file or directory
[2025-06-28 16:33:35.362] [info]  [ffmpeg-stream] exit: code=4294967294 sig=unknown
[2025-06-28 16:33:35.363] [error] [ffmpeg-stream] Error: Converting failed
    at ChildProcess.<anonymous> (C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\resources\app.asar\build\electron\ffmpeg-stream\stream.js:293:24)
    at ChildProcess.emit (node:events:518:28)
    at ChildProcess._handle.onexit (node:internal/child_process:293:12)
[2025-06-28 16:33:35.365] [error] [queue] failed to convert Error: Converting failed
    at ChildProcess.<anonymous> (C:\Users\Ryukura\Downloads\niconicomments-convert-0.0.31-win\resources\app.asar\build\electron\ffmpeg-stream\stream.js:293:24)
    at ChildProcess.emit (node:events:518:28)
    at ChildProcess._handle.onexit (node:internal/child_process:293:12)

[xpadev-net]

ありがとうございます。
どうやらffmpegが動画ファイルをうまく読み取れていないようなので、動画ファイルを別のディレクトリに移動してみるか、別の動画ファイルを試してみてください。

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It appears that ffmpeg is not reading the video file properly, so please try moving the video file to a different directory or try a different video file.