Invalid data found when processing input is a generic FFmpeg error, not a diagnosis of a Gurbani stream or its provider. To find the cause, preserve the full command and log, identify where processing stops, inspect the input with ffprobe, then make one change supported by that evidence.
The phrase alone cannot tell you whether FFmpeg could not reach the source, received an unexpected response, failed to recognise a format, or encountered a problem while decoding a stream. The steps below help you distinguish those cases without assuming what the source, protocol or setup is.
Capture the complete command and log
Before changing anything, save the exact command you ran and the complete output from that run. Include FFmpeg's banner, version and build details, the messages before the error, and anything printed afterwards. A single error line often omits the context that separates an input-opening failure from a decoding failure.
Keep a private copy of the unedited command and log. If you ask someone else to review them, remove stream keys, passwords, tokens and other credentials first. A URL can contain access information even when it looks like an ordinary address. Redact secrets without removing the protocol, host, path shape or other details needed to understand the input.
FFmpeg's -report option can help preserve a run: it writes the command line and log output to a report file in the current directory and enables debug-level logging. The extra output can be useful, but it may include private source details, so inspect and sanitise a copy before sharing it. See the FFmpeg command-line documentation for the option's behaviour and for the documentation of other command-line switches.
For example, a report-enabled run has this general form:
ffmpeg -report -i "INPUT" -f null -
Replace INPUT with the source you are actually diagnosing. This is a diagnostic starting point, not a command tested against a Gurbani stream. Do not paste a real key or password into a public support request. If you already have a command that fails, first preserve it as-is; adding report mode should not become an excuse to alter several other settings at the same time.
Record when you ran the command and whether the source is expected to be continuously available. A live endpoint can behave differently at different times. If a second client can play the source, note that as an observation, but do not treat it as proof that FFmpeg receives the same response or can parse it.
Locate when the error occurs
Read the lines around the message to determine the stage that failed. Does FFmpeg report that it cannot open the input, or does it first identify an input and then report Error while decoding stream #0:N? That distinction narrows the next check, though neither wording establishes the root cause on its own.
When the input cannot be opened or identified, look first at whether the endpoint is reachable and whether its response is what the command expects. A mistyped address, an unavailable sender, an access problem or a response that is not media are possibilities to check, not conclusions to jump to. The complete log and a probe can help establish which possibility fits.
When the input opens and the log names a stream index, use ffprobe output to identify that stream's type and reported codec. The index is specific to that input and invocation; do not assume that stream 0:0 is always video or that 0:1 is always audio. A decoding error points your attention towards packets and the selected stream, but you still need evidence before changing a codec or ignoring errors.
FFmpeg separates input handling, demuxing, decoding, stream selection and output. A problem reported during one stage does not automatically call for changing a setting in another. The FFmpeg documentation describes these stages and options such as input format selection and output mapping. Use it alongside the actual log rather than treating the message as a recipe for a particular flag.
Identify the input type and source
Write down what INPUT represents: an HTTP address, an HLS playlist, another network protocol, a local media file, a capture device, or something else. The title of a stream does not reveal its transport. Do not assume the Gurbani source is HLS, HTTP, UDP, RTMP or any particular provider unless the command and evidence show that.
Check that the address or device is the intended one and that it is available from the same machine or environment running FFmpeg. If the source is a playlist, verify that the response is actually the expected playlist and that its referenced media segments are accessible from that environment. A URL that loads in a browser or plays in another application may still return a different response to FFmpeg, or may depend on access details not present in the command.
For a live input, note whether the sender was already running when FFmpeg connected. A receiver started before a sender, a source that has ended, and a temporary network interruption are different circumstances. Record what happened rather than attempting to correct them all with reconnect flags. A historical FFmpeg-user discussion about connecting to a UDP stream at different start times illustrates that timing questions arise in real cases; it is not evidence that a particular Gurbani source uses UDP or shares that case's cause.
If the input is HTTP, reconnect options may be relevant when logs show a connection failure or live end-of-file condition. They do not make malformed bytes valid, turn a wrong URL into the intended source, or repair an invalid playlist or segment. The FFmpeg protocol documentation describes options such as reconnect, reconnect_at_eof, reconnect_on_network_error and reconnect_on_http_error; check the documentation for your installed build and the protocol actually in use before selecting one.
This is also a useful point to separate the input problem from your YouTube output setup. If FFmpeg never reads the source successfully, changing the YouTube stream key or output destination is unlikely to address that input failure. If the input reads successfully but the broadcast output later fails, preserve that separate evidence and diagnose the output stage on its own.
Inspect the detected format with ffprobe
Use ffprobe to ask what FFmpeg recognises at the source, rather than forcing a format based on a guess. A useful starting command is:
ffprobe -hide_banner -v warning -show_error -show_format -show_streams "INPUT"
The ffprobe documentation explains the reporting options: -show_error reports probing errors, -show_format reports container or input format details, and -show_streams reports each detected stream. This command is for inspection; it does not change the source or fix the error.
Compare the result with what you believe the source should be. Does FFprobe identify a format and list streams, or does it fail before showing useful media information? Does the reported format fit the file or endpoint you supplied? If the output is empty or reports an error, preserve that output too. A failed probe is evidence that needs interpretation, not a reason to add a format override blindly.
A live source is time-dependent. Note when you ran the probe and whether FFmpeg's result changes on a later run. If you can, check whether the source is available at that moment from the same host. A probe that succeeds now does not disprove an earlier interruption, and a probe that fails once does not establish a permanent source fault.
The input -f option can be appropriate when you know the source is raw and know its format; FFmpeg's documentation notes that a format option may be needed for raw input. That is a conditional case, not a general remedy for invalid data. Do not add -f simply because a probe failed: forcing the wrong demuxer can obscure the original problem or create a different one.
Check detected streams and relevant details
When probing identifies streams, inspect each stream's type, codec and index before deciding what to change. Check whether the source contains the audio or video you expected, whether one stream is absent, and whether the stream named in a decoding error is the one you intend to use. Use the actual output rather than assuming a familiar ordering.
If the input has more than one audio or video stream, selection may matter. FFmpeg's -map option controls which streams go to an output. A deliberate mapping can correct a confirmed selection mistake, but it cannot fix invalid input bytes or make an unavailable stream appear. The FFmpeg documentation also notes that data and attachment streams are not automatically selected in the same way as ordinary audio and video streams.
For example, if a probe shows an audio stream at a particular index and your output is meant to use that stream, an explicit mapping might be justified. But do not copy an example index from someone else's command: indices depend on the source. Save the original command, change only the mapping under test, then compare the resulting log and output. If the error occurs before stream detection, mapping is premature because FFmpeg has not yet established what it could select.
If the probe reports a codec but decoding fails on that stream, preserve the exact message and stream details. Do not infer that the codec is unsupported or that the source is corrupt solely from the generic invalid-data phrase. The available evidence could point in more than one direction; the installed FFmpeg build and the surrounding packet and input messages matter.
Change one evidence-based setting
Choose the smallest change that follows from what you observed. If the command points to the wrong endpoint, correct that address. If a live sender was not available at connection time, test again when it is available. If the probe confirms a known raw format, specify its demuxer. If the input is recognised and the wrong stream is being selected, adjust mapping. If an HTTP log shows a reconnect condition, consult the installed protocol documentation and test the matching reconnect option.
Do not combine an endpoint change, a forced format, a new mapping and reconnect flags in one edit. If the next run behaves differently, you would not know which change mattered. Keep a copy of the original command and label each test clearly, so you can restore it if the change makes the result worse.
Avoid broad error-ignoring or concealment flags as a first response. Suppressing or skipping errors may make a run appear to continue while leaving the input problem unresolved. For a channel that should stay live overnight, a hidden input fault can be harder to diagnose than a clear failure in a saved report.
If you need another person to suggest a change, provide the FFmpeg version and build, sanitised full command, protocol and relevant source details, ffprobe output, and the complete log around the failure. Without those details, a stream-specific command would be guesswork. Neither the word “Gurbani” nor the error text identifies a particular provider, encoder, protocol or FFmpeg configuration.
Rerun and compare the result
Run the revised command with a fresh report, changing only the one setting you chose. Compare the new output with the original: did FFmpeg now open the input, detect the expected format and streams, and get past the stage where it previously failed? Or did the same message return, perhaps at a different point? Keep both reports, with the exact command and run time, so the difference is visible.
A single successful probe or run does not guarantee that a live source will remain available. If the source is intermittent, repeat the same test under a comparable condition and note whether another client can access it at the same time. Avoid interpreting one changed result as proof of a permanent fix when the input itself may have changed between runs.
Once input reading is reliable, test the full path to your YouTube output separately. An input that probes correctly does not establish that stream mapping, encoding or YouTube ingest is correct. If you also operate a local FFmpeg broadcast, the guide to keeping an FFmpeg YouTube stream running on an Azure VM with systemd discusses process supervision rather than diagnosing an unknown source; it may help once the input issue is understood. For a different deployment, see the Windows VPS continuous-stream guide.
If maintaining a local process is itself the recurring burden, StreamNeo can remove the need to leave your own computer running for a file-based 24/7 YouTube stream. It does not identify or repair an invalid external source; establish that your media and channel are ready before changing the way you operate the broadcast.
For related setup context, the 24/7 Tamil Murugan devotional stream guide covers a different devotional-channel workflow, and the FFmpeg Kannada film-songs stream guide covers a separate FFmpeg setup. Neither is evidence of a fix for this error. Keep the focus on your own command, input and logs.
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FAQ
Does “Invalid data found when processing input” tell me what is wrong?
No. It is a generic error string and does not by itself distinguish an unavailable endpoint, unexpected response, format-detection problem, stream-selection issue or decoding problem. Read the surrounding log and inspect the input with ffprobe before choosing a fix.
Should I add -f to force a format?
Only if you have evidence that the input is raw and you know its format. Forcing a demuxer on an unknown or incorrectly identified source can hide useful evidence or cause another failure. Probe first and use the format option only when it follows from what the source actually is.
Will reconnect flags fix a live Gurbani source?
Not necessarily. HTTP reconnect options address particular connection or live EOF conditions, not invalid media payloads, an incorrect address or an unexpected server response. Check the protocol, exact FFmpeg build and log, then use the official protocol documentation to decide whether a specific option fits.
What should I provide when asking for help?
Share the FFmpeg version and build, complete sanitised command, protocol or source type, ffprobe output and unabridged log around the failure. Remove keys, passwords and tokens first. Without that evidence, nobody can responsibly prescribe a stream-specific setting.