The MP4 video can't be cut; it's reporting an error.

[BusyUSA]

No error occurred.

{
"err": false,
"state": {
"ffmpegExperimental": false,
"preserveMovData": true,
"movFastStart": true,
"preserveMetadataOnMerge": true,
"filePath": "d:\download\157 4K.mp4",
"fileFormat": "matroska",
"externalFilesMeta": {},
"mainStreams": [
{
"index": 0,
"codec_name": "h264",
"codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
"profile": "High",
"codec_type": "video",
"codec_tag_string": "[0][0][0][0]",
"codec_tag": "0x0000",
"width": 3840,
"height": 2160,
"coded_width": 3840,
"coded_height": 2160,
"closed_captions": 0,
"film_grain": 0,
"has_b_frames": 3,
"sample_aspect_ratio": "1:1",
"display_aspect_ratio": "16:9",
"pix_fmt": "yuv420p",
"level": 51,
"color_range": "tv",
"color_space": "bt709",
"color_transfer": "bt709",
"color_primaries": "bt709",
"chroma_location": "left",
"field_order": "progressive",
"refs": 1,
"is_avc": "true",
"nal_length_size": "4",
"r_frame_rate": "25/1",
"avg_frame_rate": "25/1",
"time_base": "1/1000",
"start_pts": 0,
"start_time": "0.000000",
"bits_per_raw_sample": "8",
"extradata_size": 49,
"disposition": {
"default": 1,
"dub": 0,
"original": 0,
"comment": 0,
"lyrics": 0,
"karaoke": 0,
"forced": 0,
"hearing_impaired": 0,
"visual_impaired": 0,
"clean_effects": 0,
"attached_pic": 0,
"timed_thumbnails": 0,
"captions": 0,
"descriptions": 0,
"metadata": 0,
"dependent": 0,
"still_image": 0
},
"tags": {
"title": "[GyWEB]",
"BPS": "14452391",
"DURATION": "00:25:26.320000000",
"NUMBER_OF_FRAMES": "38158",
"NUMBER_OF_BYTES": "2757371740",
"_STATISTICS_WRITING_APP": "mkvmerge v93.0 ('Goblu') 64-bit",
"_STATISTICS_WRITING_DATE_UTC": "2025-08-23 03:07:26",
"_STATISTICS_TAGS": "BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES"
}
},
{
"index": 1,
"codec_name": "aac",
"codec_long_name": "AAC (Advanced Audio Coding)",
"profile": "LC",
"codec_type": "audio",
"codec_tag_string": "[0][0][0][0]",
"codec_tag": "0x0000",
"sample_fmt": "fltp",
"sample_rate": "48000",
"channels": 2,
"channel_layout": "stereo",
"bits_per_sample": 0,
"initial_padding": 0,
"r_frame_rate": "0/0",
"avg_frame_rate": "0/0",
"time_base": "1/1000",
"start_pts": 0,
"start_time": "0.000000",
"extradata_size": 2,
"disposition": {
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"karaoke": 0,
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"captions": 0,
"descriptions": 0,
"metadata": 0,
"dependent": 0,
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},
"tags": {
"title": "[GyWEB]",
"BPS": "206188",
"DURATION": "00:25:26.336000000",
"NUMBER_OF_FRAMES": "71547",
"NUMBER_OF_BYTES": "39339211",
"_STATISTICS_WRITING_APP": "mkvmerge v93.0 ('Goblu') 64-bit",
"_STATISTICS_WRITING_DATE_UTC": "2025-08-23 03:07:26",
"_STATISTICS_TAGS": "BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES"
}
},
{
"index": 2,
"codec_name": "png",
"codec_long_name": "PNG (Portable Network Graphics) image",
"codec_type": "video",
"codec_tag_string": "[0][0][0][0]",
"codec_tag": "0x0000",
"width": 0,
"height": 0,
"coded_width": 0,
"coded_height": 0,
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"level": -99,
"color_range": "pc",
"refs": 1,
"r_frame_rate": "90000/1",
"avg_frame_rate": "0/0",
"time_base": "1/90000",
"start_pts": 0,
"start_time": "0.000000",
"duration_ts": 137370240,
"duration": "1526.336000",
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"visual_impaired": 0,
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"attached_pic": 1,
"timed_thumbnails": 0,
"captions": 0,
"descriptions": 0,
"metadata": 0,
"dependent": 0,
"still_image": 0
},
"tags": {
"filename": "SB.png",
"mimetype": "image/png"
}
}
],
"copyStreamIdsByFile": {
"d:\download\157 4K.mp4": {
"0": true,
"1": true,
"2": true
}
},
"cutSegments": [
{
"start": 186.849163,
"end": 1261.797341
}
],
"mainFileFormatData": {
"filename": "d:\download\157 4K.mp4",
"nb_streams": 3,
"nb_programs": 0,
"format_name": "matroska,webm",
"format_long_name": "Matroska / WebM",
"start_time": "0.000000",
"duration": "1526.336000",
"size": "2798651884",
"bit_rate": "14668601",
"probe_score": 100,
"tags": {
"title": "你在找什么？[GyWEB]",
"encoder": "libebml v1.4.5 + libmatroska v1.7.1",
"creation_time": "2025-08-23T03:07:26.000000Z",
"MOVIE/ENCODER": "Lavf60.16.100"
}
},
"rotation": 360,
"shortestFlag": false,
"effectiveExportMode": "merge",
"outSegTemplate": "${FILENAME}-${CUT_FROM}-${CUT_TO}${SEG_SUFFIX}${EXT}",
"mergedFileTemplate": "${FILENAME}-cut-merged-${EPOCH_MS}${EXT}",
"preserveMetadata": "default",
"preserveChapters": true
},
"platform": "win32",
"version": "3.64.0"
}

[mifi]

Hi. Try to disable the png tracks in the Tracks panel

[BusyUSA]

Thanks for the response. I tried that, but it still failed. The generated clip won't play at all.

[mifi]

but you're not getting the same error? what error are you getting in e.g. VLC when playing it back? Also did you try a different output format like mov?

[BusyUSA]

I uploaded the file. It is in the MP4 format. You can try it from the below link if possible.

https://limewire.com/d/QxkOe#ZjXyMjRWC8

[mifi]

thanks. i'm getting error also, but it works for me if i disable the png track:

[BusyUSA]

Thank you for your response. The file I just uploaded isn't the original one where I first encountered the problem because the original was too big to upload. But since both files had issues, I'm guessing the cause might be the same, so I used this one as a substitute. In the past, I've also run into other problems, such as spliced clips from different videos having corrupted content in the latter part of the playback, even if their resolutions were the same. However, in short, lossless-cut is a great software. I hope this software gets better and better.