[Bug] Downloads fail with "Force Keyframes At Cuts"

[madmini]

⠀

• Tried latest version

⠀

• This issue is not duplicated with any other open or closed issues

Describe the bug

Downloads with cuts fail when Force Keyframes At Cuts is turned on.

Logs show ERROR: ffmpeg exited with code -4. The exact same downloads work when Force Keyframes At Cuts is turned off.

Expected behavior

Downloads with Force Keyframes At Cuts work normally.

Steps to reproduce

Select a video to download, add a cut and check Force Keyframes At Cuts then download.

Device information

Device: OnePlus 6
System: OxygenOS 11.1.2.2 (Android 11)

Screenshots / Recordings

No response

Additional context

log:

Downloading:
Title: The Last Photograph We Took Of Earth
URL: https://youtube.com/shorts/YKax1HA4vHg
Type: video
Command:
--extractor-args "youtube:lang=de" --newline -N "3" --trim-filenames "183" --no-mtime --sponsorblock-remove "music_offtopic" --force-keyframes-at-cuts --download-sections "*0:00-0:07" --sponsorblock-mark "all" --embed-chapters --merge-output-format "webm" -S "vcodec:av01,acodec:opus,vext:webm" -f "398+251/398+ba/398/b" --embed-subs --sub-format "srt/best" --convert-subtitles "srt" --sub-langs "en.*,.*-orig" -P "/storage/emulated/0/Android/data/com.deniscerri.ytdl/files/downloads/20" -o "%(autonumber)d. %(section_title&{} - |)s%(uploader).30B - %(title).170B [%(section_start>%H∶%M∶%S)s].%(ext)s" --replace-in-metadata "title" ".+" "The Last Photograph We Took Of Earth" --parse-metadata "%(title)s:%(meta_title)s" --replace-in-metadata "uploader" ".+" "Vsauce" --parse-metadata "%(uploader)s:%(artist)s" "https://youtube.com/shorts/YKax1HA4vHg" 

WARNING: [youtube] Preferring "de" translated fields. Note that some metadata extraction may fail or be incorrect.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'https://rr5---sn-4g5lznle.googlevideo.com/videoplayback?expire=1740496385&ei=oYm9Z7ayL7rGi9oP5-aF0AI&ip=80.109.227.63&id=o-AGEK41A5fcJyXtcmmFCxi-Rd-cLoDN3JJ0YxbZsKBk5g&itag=398&aitags=133%2C134%2C135%2C136%2C160%2C242%2C243%2C247%2C395%2C396%2C397%2C398%2C779%2C780%2C788&source=youtube&requiressl=yes&xpc=EgVo2aDSNQ%3D%3D&met=1740474785%2C&mh=gV&mm=31%2C26&mn=sn-4g5lznle%2Csn-5hneknes&ms=au%2Conr&mv=m&mvi=5&pl=24&rms=au%2Cau&pcm2=no&initcwndbps=4411250&bui=AUWDL3wOnNED6gq99PgsLW_EHJ7HwdLIby3uavesBsnVP35kKaINeGLtY-cWnI74dLR7n-qi-jWGNgc_&spc=RjZbSVYzCQCxZ55MbJ2XswEO2sHOs2QkdOCOJ8IWxTikq_4zq1HCvHiZkvWdelDRg9N39Q&vprv=1&svpuc=1&mime=video%2Fmp4&ns=zCNpE3kwHOYMKv5lls7FkkUQ&rqh=1&gir=yes&clen=3330346&dur=59.993&lmt=1738308510662259&mt=1740474291&fvip=4&keepalive=yes&lmw=1&fexp=51326932&c=TVHTML5&sefc=1&txp=543C534&n=oKj9PwFmW1t96g&sparams=expire%2Cei%2Cip%2Cid%2Caitags%2Csource%2Crequiressl%2Cxpc%2Cpcm2%2Cbui%2Cspc%2Cvprv%2Csvpuc%2Cmime%2Cns%2Crqh%2Cgir%2Cclen%2Cdur%2Clmt&sig=AJfQdSswRQIgd09qZoDyULiHlw7c45iE8l570LWzblopOZ21gUkzsGICIQDpAvrF_gyoFtRquJ973JzSj58V5dxK4q1t4PiSwNfGkA%3D%3D&lsparams=met%2Cmh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Crms%2Cinitcwndbps&lsig=AGluJ3MwRgIhALF87TuAQxFBdir_A_phuOXRyN2avMVTHzBj6v4Gm13dAiEA3aABBcDmhc8MOTgf4aY5tLfAe7qUpeWFG2CB88xpFUk%3D':
  Metadata:
    major_brand     : dash
    minor_version   : 0
    compatible_brands: iso6av01mp41
    creation_time   : 2025-01-31T07:14:46.000000Z
  Duration: 00:00:59.99, start: 0.000000, bitrate: 444 kb/s
  Stream #0:0[0x1](und): Video: av1 (libdav1d) (Main) (av01 / 0x31307661), yuv420p(tv, smpte170m/bt470bg/bt709), 720x1280, 63 kb/s, 29.97 fps, 29.97 tbr, 30k tbn (default)
      Metadata:
        creation_time   : 2025-01-31T07:14:46.000000Z
        handler_name    : ISO Media file produced by Google Inc.
        vendor_id       : [0][0][0][0]
Input #1, matroska,webm, from 'https://rr5---sn-4g5lznle.googlevideo.com/videoplayback?expire=1740496385&ei=oYm9Z7ayL7rGi9oP5-aF0AI&ip=80.109.227.63&id=o-AGEK41A5fcJyXtcmmFCxi-Rd-cLoDN3JJ0YxbZsKBk5g&itag=251&source=youtube&requiressl=yes&xpc=EgVo2aDSNQ%3D%3D&met=1740474785%2C&mh=gV&mm=31%2C26&mn=sn-4g5lznle%2Csn-5hneknes&ms=au%2Conr&mv=m&mvi=5&pl=24&rms=au%2Cau&pcm2=no&initcwndbps=4411250&bui=AUWDL3wOnNED6gq99PgsLW_EHJ7HwdLIby3uavesBsnVP35kKaINeGLtY-cWnI74dLR7n-qi-jWGNgc_&spc=RjZbSVYzCQCxZ55MbJ2XswEO2sHOs2QkdOCOJ8IWxTikq_4zq1HCvHiZkvWdelDRg9N39Q&vprv=1&svpuc=1&mime=audio%2Fwebm&ns=zCNpE3kwHOYMKv5lls7FkkUQ&rqh=1&gir=yes&clen=1018843&dur=60.021&lmt=1729554680378458&mt=1740474291&fvip=4&keepalive=yes&lmw=1&fexp=51326932&c=TVHTML5&sefc=1&txp=5432434&n=oKj9PwFmW1t96g&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cxpc%2Cpcm2%2Cbui%2Cspc%2Cvprv%2Csvpuc%2Cmime%2Cns%2Crqh%2Cgir%2Cclen%2Cdur%2Clmt&sig=AJfQdSswRAIgBVmmVRqnD_qGx4A2HiWbwxiQwtcfGuyrTngVQhuh_2QCIFAfkyOOcZH1FQjeifzyrGYicEHgCDc9nlfuIurPJl7U&lsparams=met%2Cmh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Crms%2Cinitcwndbps&lsig=AGluJ3MwRgIhALF87TuAQxFBdir_A_phuOXRyN2avMVTHzBj6v4Gm13dAiEA3aABBcDmhc8MOTgf4aY5tLfAe7qUpeWFG2CB88xpFUk%3D':
  Metadata:
    encoder         : google/video-file
  Duration: 00:01:00.02, start: -0.007000, bitrate: 135 kb/s
  Stream #1:0(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
Stream mapping:
  Stream #0:0 -> #0:0 (av1 (libdav1d) -> vp9 (libvpx-vp9))
  Stream #1:0 -> #0:1 (opus (native) -> opus (libopus))
Press [q] to stop, [?] for help
[libopus @ 0x79b1a729f0] No bit rate set. Defaulting to 96000 bps.
[libvpx-vp9 @ 0x79b1a76650] v1.14.0
[libvpx-vp9 @ 0x79b1a76650] Neither bitrate nor constrained quality specified, using default CRF of 32
Output #0, webm, to 'file:/storage/emulated/0/Android/data/com.deniscerri.ytdl/files/downloads/20/1. Vsauce - The Last Photograph We Took Of Earth [00∶00∶00].webm.part':
  Metadata:
    major_brand     : dash
    minor_version   : 0
    compatible_brands: iso6av01mp41
    encoder         : Lavf61.1.100
  Stream #0:0(und): Video: vp9, yuv420p(tv, smpte170m/bt470bg/bt709, progressive), 720x1280 [SAR 1:1 DAR 9:16], q=2-31, 29.97 fps, 1k tbn (default)
      Metadata:
        creation_time   : 2025-01-31T07:14:46.000000Z
        handler_name    : ISO Media file produced by Google Inc.
        vendor_id       : [0][0][0][0]
        encoder         : Lavc61.3.100 libvpx-vp9
      Side data:
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
  Stream #0:1(eng): Audio: opus, 48000 Hz, stereo, flt, 96 kb/s (default)
      Metadata:
        encoder         : Lavc61.3.100 libopus


ERROR: ffmpeg exited with code -4

[deniscerri]

Can you forward this issue to yt-dlp, as its not really related to the app itself but the library. Thanks

[madmini]

The same yt-dlp command (only removing the -P ... part) works normally when I try it on the same device in termux (see setup, tested with yt-dlp version 2025-02-19).

[deniscerri]

Well -P is necessary. It can't be removed 🤔

[madmini]

In the command from the log, -P "/storage/emulated/0/Android/data/com.deniscerri.ytdl/files/downloads/20" just specifies the output path. I had to remove it for testing, as I did not have permissions for that directory in termux. If omitted, it just uses the current directory.

[deniscerri]

This might be a ffmpeg bug. What ffmpeg version do u have in termux. I believe the app uses 7.0.1

[error-reporting]

This might be a ffmpeg bug. What ffmpeg version do u have in termux. I believe the app uses 7.0.1

termux has ffmpeg 7.1 and in the op's logs I don't see any sponsorblock url

[deniscerri]

Can someone try with the same ffmpeg if the error is reproducable

[error-reporting]

so you mean try with ffmpeg 7.0.1

[deniscerri]

Yeah

[error-reporting]

Yeah

Ffmpeg actually just needs to be recompiled with --enable-librav1e --enable-libaom and --enable-vp9

[madmini]

Seems youre right. The same download as above works perfectly when I prefer AVC (or HEVC). Just fails when it needs to re-encode VP9 or AV1.